You have set the gain of your MAIN antenna right down to almost zero, almost like unplugging your antenna LOL, no wonder it "works". You need to try to not attenuate your main antenna too much, and rather adjust the other controls to adjust the phase. I have the same QRM eliminator from Wimo in Germany. To get it to work properly, it's all about your noise pickup antenna, then adjusting to get the same signal strength on both the main antenna and the noise antenna, then adjusting the phase to null the noise out.
I've just got one of these and indeed if you turn the gain right down the noise does drop, but then so does the signal. It's like turning your RF gain down so I think you're losing everything unfortunately. It does depend if your noise is actually QRM or just background noise. Background noise it doesn't help. Switch the power off at the fuse board and run the rig by battery and see if that changes anything.
Andy, also the aux antenna shouldn't be tuned to the same frequency you want to transmit on. The instructions say to use a random piece of wire or a 2m aerial so I suspect you're just cancelling out all the 27MHz signals. The idea I believe is that the aux antenna only picks up the unwanted singal and not the wanted one. Keep playing around with it!
It's like a phased array antenna but one you set up yourself and it only has two receiving elements. Theories pertaining to phased array antennas would come in really handy here. Sound engineers use similar techniques for live sound when they use an out-of-phase mic to capture audience noise to effectively null it out in the mixer. It's crude, but it works fairly well.
I do admire your passion for the 705 and even using it for CB - but as others have pointed out, you need to phase the antennas, so increase that gain and get them phasing - someone as smart as you can do it ! The best ones for the QRM eliminator are the Miniwhip - had one setup for a while and with the right grounding they are excellent with the QRM eliminator. I dont really suffer the noise levels I used to, but I could investigate again to see if setting one up will provide some benefits.
Hi Andy, I appreciate your excitement but, sorry, you're using this gadget in the wrong way. As others have said, you have the Main Antenna Gain all the way down - of course it will reduce the noise (and the signals, too). I have this exact same gadget from WiMo. I use it for HF and it's not bad ... but not a miracle either. Here's how you use it effectively: 1) Turn the left phase all the way down (7 o'clock), turn the right phase to 12 o'clock, turn the right Gain all the way down to 7 o'clock 2) Now adjust the left phase until you hear a noise null leaving the right phase at 12 o'clock, then go back and forth with the two phase controls until the null is the lowest 3) At this point, the two phase controls are typically around ~10 o'clock and ~2 o'clock sequentially for me, while right Gain still remains all the way down 4) Gradually begin to turn up the right Gain - try it at 9 o'clock, tweak the two phase controls for lowest noise null, then try it at 12 o'clock, tweak the two phase controls again 5) Ultimately, you want the right Gain to be AT LEAST at 3 o'clock ... ideally all the way up to 5 o'clock but that rarely works well for me The other trick is to use a noise antenna NEAR the noise source (if possible) since that's the noise you want to reduce. If you can't do that, use a good gain vertical but make sure it's not tuned to the same band as the signal you want. I've also been experimenting with an ACTIVE noise antenna with an inline LNA. In essence what you've done in this video is the same as turning the RF Gain control down on your rig - it lowers the noise ... and the signals. But keep playing - this is a very touchy gadget. Good luck, 73 buddy! KJ6ER, Silicon Valley
Also, Andy, make sure that the secondary earial is NOT tuned to the frequency that you want to work on, otherwise you will be defeating the object of using the QRM Eliminator. A couple of Mtrs of wire plugged into the secondary earial/antenna socket will give you the best results on all the the bands within the HF range, & if you are really lucky, maybe on 6 metres as well, plus frequencies below top band. Kind Regards, Ray, M0RAY. Kent.
Hi Andy, I hope you're aware that this X Phase Noise Canceller/Eliminate is good on all of the HF Amateur-Radio bands. Kind Regards,, M0RAY. Sittingbourne, Kent.
Love your vid's mate keep them coming! Got my General license last year I did cb 27.385 lsb for 40 years don't let them get to mate all the hams do cb when the band is open. Good advice about a small am transistor radio to sniff out noise in your home frig, wifi, transformers ,etc. Use ferrite beads on ac line cords to get rid of the interior noise. Brenda!s husband John Boy Utah. World radio 038 div#2 aka KJ7TBR wish I could hit the U.K. from Utah! 73 I am seventy three!😎🎙📡
Unfortunately 27MHz is a dumping ground for all sorts of random RF devices. You could try a wire inverted dipole which would be better for Signal to Noise ratio. However, I would suggest sitting your Amateur Radio Foundation and make the most of your Amateur radios. Consider joining a AR club, many Hams operate CB as well and can provide great advice and assistance.
Hi the antenna I'm using is basically a vertical dipole, an inverted V is horizontally polarised so would be no good for local contacts as most are using verticals. Great for DX though. I am a HAM with a license so I can use all the bands, 27Mhz is interesting to me at the moment because there's loads of activity (funnily enough most of them are also HAMs)
Have you tried a tuned and grounded dipole wire with insulators? You can also buy a trapped dipole. Why not go up on your roof or into the attic space and get it as far away from that downstairs apartment as possible. Then run your center line as directly down from there as you can? Do you have an equivalent to our FCC who might... eventually... consider... possibly... addressing it?
These have been around for a long time. Rather than hide the noise find your noise. Start with killing every breaker in the house other than the one your radio is on. If the noise goes away we need to search inside the home, if it stays we need to start looking outside at leaking power lines. So if the noise goes away start turning breakers on one at a time and wait 5 minutes after each one and continue till the noise comes back. Once you figure the circuit it’s on disconnect all equipment plugged into that circuit and proceed as you just did plugging in and waiting one at a time. Lighting will cause noise and some low power transformer bleed from like its, its job. If noise is outside you will need a portable radio to track it down.
I think if you have a lot of noise, going to a magnetic loop antenna is the way to go. It is blind to electric noise in the electromagnetic spectrum.....and people find these antennas are always quieter, while giving great performance. Only thing, they need frequent tuning.
I have a couple of loops actually and they are brilliant, much less noise and very portable. Now I only really use loops and have taken the long wire down.
@@andykirby I'm thinking of building, or just buy one with remote. My issue is will I like being bothered by the frequent tuning. Second, the high voltage worries me.....accidentally touching it, or someone else does. Third, sitting vertically on the ground, you are standing in line with the RF field (although 8 ft away is considered safe), but I prefer an antenna above my head, ...roof of car or house.
that device is ready build for like 42€ in onlineshops, that brand you bought it from coats more than three times that much. you're attenuating all the input from the antenna, the desired signal will be attenuated too, along the noise. use the left two knobs to null out the noise and then the gain knob to set the residue 11m band noise to like S1 or S2 on the receiver.
@@rpsmith Ofcom don't care about CB radio or Amateur radio anymore. Not like they did 30 years ago when it was the DTI Radio Investigation Service. Times change. TV is all digital now and there's hardly ever any interference. If the guy wants to use a Ham radio on 27 MHz he's doing no harm.
@@JasonTDolan -- Well as a general rule here in the states, Ham Radio operators are known for obeying all two-way radio laws, not just the ones they agree with.
@@rpsmith I don't agree with CB users using the Amateur radio bands, they should get their licence as its easier now. But if a CB user is just using the legal CB bands its really no harm. The authorities in the UK are Ofcom and if you do call them they will say they don't have the time or money to pursue it. They focus mainly on broadcast radio bands like FM, AM and DAB. They obviously make money from commercial use. But in the days gone by when it was the DTI they came down on everyone like a ton of bricks. And took all their radio equipment and took them to court. I'm aware the FCC in USA are very strict.
A loop antenna will cut your noise.. 2/ 3 points troble is there big maybe you can get one in the loft.. 10/11 meter loop will tune to alot of ham bands all of them with right design.. East /west if you can get it... Better s/n ratio to start with..
These things do work but the position of the noise sense antenna is critical. The way you have it positioned its just canceling everything including the wanted signals.
Good video. Apartment, eh? Now I'm regretting deleting my videos I had on my channel mostly promoting the "apartment amateur/ham/cb radio/antenna mounted on balcony railing! Can you mount anything longer than that small dipole, like maybe a 17 foot long telescoping whip from Chameleon Antenna along with their CHA-MIL matcher/transformer?
There are many man made noises that can not be filtered out with any radio. Cancelling them out works quite well as long as long as there aren’t too many sources.
I've got one of these, works well against a local defined source of noise but not against the general mush, the interference needs to a from a source to be able to "phase it out", it's a shame I can't post images in comments I've a screen shot from my SDR showing exactly what it does and doesn't cancel out. You need to adjust it when there are signals on the band or you can just be cancelling everything out.
Haha, Andy, your set up is very similar to mine! Wires everywhere..... My antenna/s are currently just plonked under the back verandah There's nothing much on 27Mhz atm. I have to deal with QRM but it's only apparent on about 3 or 4 channels. Strangely enough, it seems to shift/drift for eg/ @20:30 it was channels 09,32,39 @21:45 it was channels 03,13,19,31 all other channels had very minimal QRM I also balance the RF Gain to around 12:00 or else I won't hear anything! lol yeah, other than that, nothing..... :(
Nice but how does it work with 2 full size antenna 27 foot Long how it work on 80 meters 2 full size antenna 120 foot long dipole antenna can you transmit into this device
Э..э,э ребята, ваши бы возможности в 70-80х годах, даже в нелегале, добивались много большого, да, время идёт, жизнь не тормозит, и развивается. СПАСИБО за ролик вам, благодарен. Привет из Западной Сибири.
I have one of these, unfortunately, my experience is that the Gain control reduces the gain on the main antenna, so if you wind that down all you’re doing is reducing the gain and not improving the SNR. They are not the magic cure everyone seems to make them out to be. The problem is that the noise we get these days comes from multiple sources and these will take care of one or two but not lots. I can get it to make a small difference sometimes depending on the band you use it on. You’re noise is similar to mine by the look of it.
The phase cancellation will really only work for one source. My advice would be to move the main antenna away from noise sources. And you can go a long way by using ferrite cores and dampen the noise sources where possible.
iv saw a few of these things people trying to lower the noise, it will drop your other station noise also, in my eyes there is no gain in using one of these, if you would like to talk to people do your amateur license I'm sure 2m and 70cm will not be a problem
Hi andy I have one of these and they work well on hf bands 80meter and 40 and 20 I live in a ground floor flat with a flat above me and they have washing machines going and other stuff I have a long wire going around the ceiling and another one on the floor and also a good grounding system I normaly get s9 interference and with this unit connected it's down to s3 or s2 so highly recommend having one if you are limited for antenna space and high interference it dose take some getting used to very fine tuning to get the best signal
@@andykirby hi andy I have made a few contacts in France Poland but conditions on the hf bands have been very poor during the day I cant hear much but the later part of the eve the 80m band gets lively and also 40m band heard the states coming in on 40 around 11 pm hoping the bands will get better soon as I have been into ham radio from the age of 11 now 48 hi hi and I havent seen the bands as poor as they are now glad you are keeping well mate
Whats in da box? Like the music btw. I have bad qrm on 6m which is from one of the houses nearby. S7-S8. 6m is my fave band too. 😥 Just programmed my 817 for the UK40. Quiet here too on 11m this week. Almost tempted to put the DV27 on a biscuit tin in the loft ...just like in the 80s 🤣 but probably only pick up QRM. Probably gonna make a slim jim out of 450ohm ladder line on a fibreglass pole and see what happens.
I'm kind of shocked to see a 35 CM "rubber-ducky" antenna used on an 11 METER Wavelength frequency. Try using as an antenna an ~2.75 Meter (1/4 wavelength) long piece of thin wire dropped straight down by it own weight, with the coax shield "grounded" onto the metal balcony frame. You are welcome.
The auxiliary antenna should only pick up interference, the less sensitive it is to the useful signal, the better. So the Rubber Ducky is quite a good solution. However, he used the QRM eliminator incorrectly (as some have already written here).
Just wait a few months, and keep listening. The sun is coming to life/cycle. Months from now, there will be so many signals it will be difficult to choose one to contact.
There's a few people in my area that's got proper massive antenna in the garden .... I haven't played with mine for ages old style ones did have AM one as well sure cud hear aeroplanes on it back in the day lol Oh ya might be picking up interference sure RC cars operate at that frequency 27mhz lol
Very old RC, or toys use 27 mhz. Modern RC is 2 Ghz spread spectrum digital. I could see on his radio he is experiencing power grid, television, and PSU noise. Urban hash that covers much of the spectrum. There are few things that can be done for a lot of it, but Power grid can be handled by contacting the provider and requesting it be addressed. Allow a few weeks for inaction, then demand and mention they are not licensed broadcasters and the authorities would appreciate the revenue of a fine. That will motivate them to investigate the problem. Most noise today comes from power lines, wall transformers, power supplies, WiFi devices, and Televisions. An old transistor radio (AM) will assist in locating offending locations/devices.
Not so much about reducing noise , it's all about sig to noise ! Would like to see that experiment with a weak sig ? Is it just like backing off the rf gain ? rf gain on the 705 might be like the ic7300 just backs off everything? The rf gain on my ic7300 is utter crap .
RF gain is normally, and almost always, incorrectly used by operators. The goal is to have it as low as possible at all times while still allowing intelligible signals. This, combined with AGC, will provide the cleanest signals possible. I have used the 7300 and I find the RF gain to be excellent. Not as good as my FTDX3000, but a close second. The principle of the device he is using here is that it inverts the noise and uses that to cancel out hash. By sampling the noise, then placing that signal over top and inverted. Similar to the vehicle manufactures who use a microphone to sample audio within the vehicle, then play it back inverted through a sound system, thus canceling out road noise and creating a very quiet ride. It is great science.
@@tahoma6889 maybe it's me ? I just sold my ftdx3000 to a pal of mine . It was pretty good in picking out weak sigs . He also has a ic7300 and thinks it is very good and the rf gain works well . The big difference I think is he has always a lot of noise and I have very very low noise . So when I am trying to pick out a low sig on top band in summertime crashing the ic7300 just cuts down everything as you turn back the fr gain . It simply just reduces everything. All yes all my other super het rigs cranking back the rf lifts the noise floor helping you hear the wanted sig . The other thing I noticed is backing off the rf all the way ,you are still left with a fair bit of noise even with the volume all the way down . Like I said if you are suffering from a lot of noise the ic 7300 might do a job ,but in a low noise nieghbourhood but noisy band the rf control on the ic 7300 is worthless. My ft897 ,ic 781 , ic 7200 do a much better job.
be rite over to take that radio. wow i cant belive he had it on 11m. omg thats it mate no more for you ur cut off .. hahhahhahahhaha..... i was thinking from the get.. would it handle 100 watts. but you answered that for me lol.... would like to see contacts on it. if your on the hf side why not . lol
You have set the gain of your MAIN antenna right down to almost zero, almost like unplugging your antenna LOL, no wonder it "works". You need to try to not attenuate your main antenna too much, and rather adjust the other controls to adjust the phase. I have the same QRM eliminator from Wimo in Germany. To get it to work properly, it's all about your noise pickup antenna, then adjusting to get the same signal strength on both the main antenna and the noise antenna, then adjusting the phase to null the noise out.
I've just got one of these and indeed if you turn the gain right down the noise does drop, but then so does the signal.
It's like turning your RF gain down so I think you're losing everything unfortunately.
It does depend if your noise is actually QRM or just background noise. Background noise it doesn't help.
Switch the power off at the fuse board and run the rig by battery and see if that changes anything.
Andy, also the aux antenna shouldn't be tuned to the same frequency you want to transmit on.
The instructions say to use a random piece of wire or a 2m aerial so I suspect you're just cancelling out all the 27MHz signals.
The idea I believe is that the aux antenna only picks up the unwanted singal and not the wanted one.
Keep playing around with it!
I HAD the same thing from MFJ. It also worked but only on a specific range of noise
you can turn down your rf gain and it will drop any noise without loosing anything, just dont turn it down to much.
qrM is 'Man-made' noise, while qrN is 'Naturally occurring' noise.
Big difference.
Just a fyi . . .
It's like a phased array antenna but one you set up yourself and it only has two receiving elements. Theories pertaining to phased array antennas would come in really handy here. Sound engineers use similar techniques for live sound when they use an out-of-phase mic to capture audience noise to effectively null it out in the mixer. It's crude, but it works fairly well.
I do admire your passion for the 705 and even using it for CB - but as others have pointed out, you need to phase the antennas, so increase that gain and get them phasing - someone as smart as you can do it ! The best ones for the QRM eliminator are the Miniwhip - had one setup for a while and with the right grounding they are excellent with the QRM eliminator. I dont really suffer the noise levels I used to, but I could investigate again to see if setting one up will provide some benefits.
Hi Andy, I appreciate your excitement but, sorry, you're using this gadget in the wrong way. As others have said, you have the Main Antenna Gain all the way down - of course it will reduce the noise (and the signals, too). I have this exact same gadget from WiMo. I use it for HF and it's not bad ... but not a miracle either. Here's how you use it effectively:
1) Turn the left phase all the way down (7 o'clock), turn the right phase to 12 o'clock, turn the right Gain all the way down to 7 o'clock
2) Now adjust the left phase until you hear a noise null leaving the right phase at 12 o'clock, then go back and forth with the two phase controls until the null is the lowest
3) At this point, the two phase controls are typically around ~10 o'clock and ~2 o'clock sequentially for me, while right Gain still remains all the way down
4) Gradually begin to turn up the right Gain - try it at 9 o'clock, tweak the two phase controls for lowest noise null, then try it at 12 o'clock, tweak the two phase controls again
5) Ultimately, you want the right Gain to be AT LEAST at 3 o'clock ... ideally all the way up to 5 o'clock but that rarely works well for me
The other trick is to use a noise antenna NEAR the noise source (if possible) since that's the noise you want to reduce. If you can't do that, use a good gain vertical but make sure it's not tuned to the same band as the signal you want. I've also been experimenting with an ACTIVE noise antenna with an inline LNA. In essence what you've done in this video is the same as turning the RF Gain control down on your rig - it lowers the noise ... and the signals. But keep playing - this is a very touchy gadget. Good luck, 73 buddy! KJ6ER, Silicon Valley
No response from Andy, 10-4 rubber duck, over and out!! 🤣
It
@@ericdee6802 you won`t.
Hardly a CB gadget. These have been around forever. But good to see how this one works for you. Thank you
Also, Andy, make sure that the secondary earial is NOT tuned to the frequency that you want to work on, otherwise you will be defeating the object of using the QRM Eliminator. A couple of Mtrs of wire plugged into the secondary earial/antenna socket will give you the best results on all the the bands within the HF range, & if you are really lucky, maybe on 6 metres as well, plus frequencies below top band.
Kind Regards,
Ray,
M0RAY.
Kent.
Hi Andy,
I hope you're aware that this X Phase Noise Canceller/Eliminate is good on all of the HF Amateur-Radio bands.
Kind Regards,,
M0RAY.
Sittingbourne, Kent.
Love your vid's mate keep them coming! Got my General license last year I did cb 27.385 lsb for 40 years don't let them get to mate all the hams do cb when the band is open. Good advice about a small am transistor radio to sniff out noise in your home frig, wifi, transformers ,etc. Use ferrite beads on ac line cords to get rid of the interior noise. Brenda!s husband John Boy Utah. World radio 038 div#2 aka KJ7TBR wish I could hit the U.K. from Utah! 73 I am seventy three!😎🎙📡
Unfortunately 27MHz is a dumping ground for all sorts of random RF devices.
You could try a wire inverted dipole which would be better for Signal to Noise ratio.
However, I would suggest sitting your Amateur Radio Foundation and make the most of your Amateur radios.
Consider joining a AR club, many Hams operate CB as well and can provide great advice and assistance.
Hi the antenna I'm using is basically a vertical dipole, an inverted V is horizontally polarised so would be no good for local contacts as most are using verticals. Great for DX though.
I am a HAM with a license so I can use all the bands, 27Mhz is interesting to me at the moment because there's loads of activity (funnily enough most of them are also HAMs)
SDR with DSP why not just do it all in software Mr Icom.
Have you tried a tuned and grounded dipole wire with insulators? You can also buy a trapped dipole. Why not go up on your roof or into the attic space and get it as far away from that downstairs apartment as possible. Then run your center line as directly down from there as you can? Do you have an equivalent to our FCC who might... eventually... consider... possibly... addressing it?
These have been around for a long time. Rather than hide the noise find your noise. Start with killing every breaker in the house other than the one your radio is on. If the noise goes away we need to search inside the home, if it stays we need to start looking outside at leaking power lines.
So if the noise goes away start turning breakers on one at a time and wait 5 minutes after each one and continue till the noise comes back.
Once you figure the circuit it’s on disconnect all equipment plugged into that circuit and proceed as you just did plugging in and waiting one at a time.
Lighting will cause noise and some low power transformer bleed from like its, its job.
If noise is outside you will need a portable radio to track it down.
I think if you have a lot of noise, going to a magnetic loop antenna is the way to go. It is blind to electric noise in the electromagnetic spectrum.....and people find these antennas are always quieter, while giving great performance. Only thing, they need frequent tuning.
I have a couple of loops actually and they are brilliant, much less noise and very portable. Now I only really use loops and have taken the long wire down.
@@andykirby I'm thinking of building, or just buy one with remote. My issue is will I like being bothered by the frequent tuning. Second, the high voltage worries me.....accidentally touching it, or someone else does. Third, sitting vertically on the ground, you are standing in line with the RF field (although 8 ft away is considered safe), but I prefer an antenna above my head, ...roof of car or house.
Power cord....wrap it around 3 donut magnets. Helps with ..RF junk. ..did it in my peterbilt
that device is ready build for like 42€ in onlineshops, that brand you bought it from coats more than three times that much.
you're attenuating all the input from the antenna, the desired signal will be attenuated too, along the noise.
use the left two knobs to null out the noise and then the gain knob to set the residue 11m band noise to like S1 or S2 on the receiver.
A Ham radio to use on the CB bands. Impressive.
And most likely illegal!
@@rpsmith Ofcom don't care about CB radio or Amateur radio anymore. Not like they did 30 years ago when it was the DTI Radio Investigation Service. Times change. TV is all digital now and there's hardly ever any interference. If the guy wants to use a Ham radio on 27 MHz he's doing no harm.
@@JasonTDolan -- Well as a general rule here in the states, Ham Radio operators are known for obeying all two-way radio laws, not just the ones they agree with.
@@rpsmith I don't agree with CB users using the Amateur radio bands, they should get their licence as its easier now. But if a CB user is just using the legal CB bands its really no harm. The authorities in the UK are Ofcom and if you do call them they will say they don't have the time or money to pursue it. They focus mainly on broadcast radio bands like FM, AM and DAB. They obviously make money from commercial use. But in the days gone by when it was the DTI they came down on everyone like a ton of bricks. And took all their radio equipment and took them to court. I'm aware the FCC in USA are very strict.
A loop antenna will cut your noise.. 2/ 3 points troble is there big maybe you can get one in the loft.. 10/11 meter loop will tune to alot of ham bands all of them with right design.. East /west if you can get it... Better s/n ratio to start with..
These things do work but the position of the noise sense antenna is critical. The way you have it positioned its just canceling everything including the wanted signals.
Could it be actually cutting your RF signal and making out it is working ?
yes it will
Good video.
Apartment, eh? Now I'm regretting deleting my videos I had on my channel mostly promoting the "apartment amateur/ham/cb radio/antenna mounted on balcony railing!
Can you mount anything longer than that small dipole, like maybe a 17 foot long telescoping whip from Chameleon Antenna along with their CHA-MIL matcher/transformer?
So it works like the TIMEWAVE ANC-4 and the MFJ-1026 by phasing out the RF. Surprised it doesn't have an RF sensed pass through relay.
Interesting piece of kit just need to play around with it I guess.
Turn off your Pre amp for one..... and all this did was attenuate your rx signal.... You can do that with your RF gain control!!
Some of those noise filters will knock out some receive signal. ...
From . (772 Minnesota corn bread.)
Honestly, is not worth it. Any SDR radio does better at cutting noise and keeping a signal strong. Also, a loop antenna helps tons. Just my 2 cents.
There are many man made noises that can not be filtered out with any radio. Cancelling them out works quite well as long as long as there aren’t too many sources.
I've got one of these, works well against a local defined source of noise but not against the general mush, the interference needs to a from a source to be able to "phase it out", it's a shame I can't post images in comments I've a screen shot from my SDR showing exactly what it does and doesn't cancel out. You need to adjust it when there are signals on the band or you can just be cancelling everything out.
Try a DSP Noise Cancelling in - line from ( bhi ltd ) takes two AA bateries.
Hi Andy is it an Antron in the box? I had one years ago they are brilliant. Check out Fred in the shed he is a wealth of knowledge.Kev
Careful now Andy, don't want to upset those grumps complaining you're on 27 MHz on a ham radio haha. Good on you mate, keep the videos coming
you using a amatur radio for cb?
I know. Crazy eh.
Haha, Andy, your set up is very similar to mine! Wires everywhere.....
My antenna/s are currently just plonked under the back verandah
There's nothing much on 27Mhz atm.
I have to deal with QRM but it's only apparent on about 3 or 4 channels.
Strangely enough, it seems to shift/drift for eg/
@20:30 it was channels 09,32,39
@21:45 it was channels 03,13,19,31
all other channels had very minimal QRM
I also balance the RF Gain to around 12:00 or else I won't hear anything! lol
yeah, other than that, nothing..... :(
Nice but how does it work with 2 full size antenna 27 foot Long how it work on 80 meters 2 full size antenna 120 foot long dipole antenna can you transmit into this device
This is really some kind of fascinating stuff 😂👍
Э..э,э ребята, ваши бы возможности в 70-80х годах, даже в нелегале, добивались много большого, да, время идёт, жизнь не тормозит, и развивается. СПАСИБО за ролик вам, благодарен. Привет из Западной Сибири.
I have one of these, unfortunately, my experience is that the Gain control reduces the gain on the main antenna, so if you wind that down all you’re doing is reducing the gain and not improving the SNR. They are not the magic cure everyone seems to make them out to be. The problem is that the noise we get these days comes from multiple sources and these will take care of one or two but not lots. I can get it to make a small difference sometimes depending on the band you use it on. You’re noise is similar to mine by the look of it.
The phase cancellation will really only work for one source. My advice would be to move the main antenna away from noise sources.
And you can go a long way by using ferrite cores and dampen the noise sources where possible.
Are they making PVC raincoats in the shop below where you live if so it should be on a narrow frequency band of a few kilohertz.
Try a double bazooka ant used in inverted V shape. Same situation here- works available on ebay. handmade-good quality see you tube also,
Hi Andy- why are you using a lovely radio like that on CB?
Why not! I use it for everything else!
Try magloop on balcony
Loop antennas work great. 👍
iv saw a few of these things people trying to lower the noise, it will drop your other station noise also, in my eyes there is no gain in using one of these, if you would like to talk to people do your amateur license I'm sure 2m and 70cm will not be a problem
It does work to sn extent, its fiddly tho. I already have an amateur licence.
You remind me of German actor Mike Krüger!
Neat gadget, very interesting.
You can just use your RF gain and adjust the Ref on the radio, same thing
Just wondering - Has Andy just got his licence or something ?
How do I convert one of these radios to 11 meter and use in my semi truck
Im warming to this channel
is that an Adaptive Noise Filter using DSP processing?
Hi andy I have one of these and they work well on hf bands 80meter and 40 and 20 I live in a ground floor flat with a flat above me and they have washing machines going and other stuff I have a long wire going around the ceiling and another one on the floor and also a good grounding system I normaly get s9 interference and with this unit connected it's down to s3 or s2 so highly recommend having one if you are limited for antenna space and high interference it dose take some getting used to very fine tuning to get the best signal
Hi Michael, hope you are well. Sounds good, have you madman contacts with the wire setup?
@@andykirby hi andy I have made a few contacts in France Poland but conditions on the hf bands have been very poor during the day I cant hear much but the later part of the eve the 80m band gets lively and also 40m band heard the states coming in on 40 around 11 pm hoping the bands will get better soon as I have been into ham radio from the age of 11 now 48 hi hi and I havent seen the bands as poor as they are now glad you are keeping well mate
Whats in da box? Like the music btw. I have bad qrm on 6m which is from one of the houses nearby. S7-S8. 6m is my fave band too. 😥 Just programmed my 817 for the UK40. Quiet here too on 11m this week. Almost tempted to put the DV27 on a biscuit tin in the loft ...just like in the 80s 🤣 but probably only pick up QRM. Probably gonna make a slim jim out of 450ohm ladder line on a fibreglass pole and see what happens.
@ 27 Mhz a Slimjim is around 7.5 meters in length.
I'm kind of shocked to see a 35 CM "rubber-ducky" antenna used on an 11 METER Wavelength frequency.
Try using as an antenna an ~2.75 Meter (1/4 wavelength) long piece of thin wire dropped straight down by it own weight, with the coax shield "grounded" onto the metal balcony frame.
You are welcome.
The auxiliary antenna should only pick up interference, the less sensitive it is to the useful signal, the better. So the Rubber Ducky is quite a good solution. However, he used the QRM eliminator incorrectly (as some have already written here).
andy kirby: Where (0n the radio) does the PTT cable go to ?
A friend told me CBs are now digital. Does anyone know?
I have a midland alan handheld I rarely pick anything up on it.
Just foul mouthed idiots on CB radio. In Glasgow anyways.
Just wait a few months, and keep listening. The sun is coming to life/cycle. Months from now, there will be so many signals it will be difficult to choose one to contact.
What type of radio is that
you really surprized me Andy,
There's a few people in my area that's got proper massive antenna in the garden .... I haven't played with mine for ages old style ones did have AM one as well sure cud hear aeroplanes on it back in the day lol
Oh ya might be picking up interference sure RC cars operate at that frequency 27mhz lol
rc cars etc are usually on 2.4 ghz nowadays
@@DavidAllen682 yeh I know but the cheap ones don't lol cud be 21mhz lol one guy said cud be power supply try battery see the difference
Very old RC, or toys use 27 mhz. Modern RC is 2 Ghz spread spectrum digital. I could see on his radio he is experiencing power grid, television, and PSU noise. Urban hash that covers much of the spectrum. There are few things that can be done for a lot of it, but Power grid can be handled by contacting the provider and requesting it be addressed. Allow a few weeks for inaction, then demand and mention they are not licensed broadcasters and the authorities would appreciate the revenue of a fine. That will motivate them to investigate the problem. Most noise today comes from power lines, wall transformers, power supplies, WiFi devices, and Televisions. An old transistor radio (AM) will assist in locating offending locations/devices.
Brilliant
Sorry Andy, i see you already use a magloop...Duh!
It appears to be an un necessary external RF RX gain gadget. I like your channel Andy Cheers
Not so much about reducing noise , it's all about sig to noise !
Would like to see that experiment with a weak sig ?
Is it just like backing off the rf gain ?
rf gain on the 705 might be like the ic7300 just backs off everything? The rf gain on my ic7300 is utter crap .
RF gain is normally, and almost always, incorrectly used by operators. The goal is to have it as low as possible at all times while still allowing intelligible signals. This, combined with AGC, will provide the cleanest signals possible. I have used the 7300 and I find the RF gain to be excellent. Not as good as my FTDX3000, but a close second.
The principle of the device he is using here is that it inverts the noise and uses that to cancel out hash. By sampling the noise, then placing that signal over top and inverted. Similar to the vehicle manufactures who use a microphone to sample audio within the vehicle, then play it back inverted through a sound system, thus canceling out road noise and creating a very quiet ride. It is great science.
@@tahoma6889 maybe it's me ? I just sold my ftdx3000 to a pal of mine . It was pretty good in picking out weak sigs .
He also has a ic7300 and thinks it is very good and the rf gain works well . The big difference I think is he has always a lot of noise and I have very very low noise . So when I am trying to pick out a low sig on top band in summertime crashing the ic7300 just cuts down everything as you turn back the fr gain . It simply just reduces everything. All yes all my other super het rigs cranking back the rf lifts the noise floor helping you hear the wanted sig . The other thing I noticed is backing off the rf all the way ,you are still left with a fair bit of noise even with the volume all the way down . Like I said if you are suffering from a lot of noise the ic 7300 might do a job ,but in a low noise nieghbourhood but noisy band the rf control on the ic 7300 is worthless. My ft897 ,ic 781 , ic 7200 do a much better job.
This is not a CB gadget...
It is whatever you want it to be😜
headline to videos almost becoming like some scam site of one of those watch till the end things
ciao marco poggioli
would like to see this on 27.555
I got s3 noise on fm but if i switch to ssb it goes upto s7/9 !
Yes meter on FM is less sensitive than on SSB.
😄👋💪💪💪🍀👍
be rite over to take that radio. wow i cant belive he had it on 11m. omg thats it mate no more for you ur cut off .. hahhahhahahhaha..... i was thinking from the get.. would it handle 100 watts. but you answered that for me lol.... would like to see contacts on it. if your on the hf side why not . lol
Overkill to get on CB!
Only 1 view while I'm watching. I think in the first lol