Man oh man! Awesome! Building antennas is what I enjoy the most out of this hobby. Your handle sounds familiar to me . I’m sure we’ll cross paths on the airwaves!
Interesting project. Never thought to try using a 3/8 wave antenna. It would be interesting to do an A/B signal comparison between that and a 1/4 wave whip or a Wilson 1000/5000 etc. Then you'll really know if the actual radiation is getting out better. Low SWR is important but after a certain point, it hardly makes much difference. For example, I actually won a 4 pill shootout even though the match wasn't all that amazing (like 1.4). But I spent a good amount of time optimizing the forward gain of my vehicle. Cheers from Orange County, CA.
Yesssss Yesssss optimal ground plane or directional gain is very important.. Awesome about your contest winning! Let me tell you, I’ve had and used most of them off the shelves antennas…. Differences were phenomenal in comparison using a signal strength meter.
@@102MobileCustomCB The off the shelf antennas are most fun burning them haha! Like the firestick. But back to the A/B comparision, it would be I think great video content to show the difference. Because seeing is believing.
Nice set up. Great to see you using your network analyzer also. I've been starting to use mine more lately and it's getting easier to remember how to operate it. Thanks for the tour of your mobile station. DragN'Fly in tennessee saying 73
Right there right theeeere! Nano vna is the best device I’ve ever bought! Check out my center console water cooled rci radio! Now just finished another copper antenna for freightliner cascadia.
Thanks for the flowers! Oh man oh man….. I tell ya… I tried almost every antenna that you can possibly imagine. Never got nowhere near the results I got with this one. With 400w Mobile and this antenna i make same contacts as my local friend running 100w and a 2 element beams 30 ft up in the air.
@@102MobileCustomCB I have a homemade vertical dipole that is matched almost perfectly and with about 60w I can hit from the Bahamas to Canada. My antenna uses 1/2" galvanized conduit. I think the only good antennas are home built ones!
You do not need a loading coil on a 3/8 wave antenna. Any straight length greater than a quarter wave (8.6ft) and less than three eights wave (12.9ft) may be tuned only with a variable cap from center of feed to ground. 3/8 wave antennas are inductive reactive and need capacitance to tune. If you have a coil it is not a 3/8 wave antenna, it has to be greater than a 3/8, or less than a quarter wave to run a coil. Bottom of my QRZ bio I have info on antennas greater than quarter wave. A 3/8 wave mounted on top of truck bed (about 4 feet from ground) should be almost 17 feet tall. Most traffic lights hang between 12.5 and 14.5 feet. Use extreme caution on streets, as a 3/8 wave is oversize and will hit many objects and trees. I know they will hit things, I ran a 128 inch whip, 11 meter home brew, for my CB on my Samurai roof 30 years ago. Peace, AC4KV 73's Keep experimenting. A good way to learn.
Let me say that I love comments from people like you that actually know a think or two more than I do.. I am not an expert nor an engineer I am just a handy enthusiastic…. It all started when I wanted to compete with the locals and I wasn’t allowed by the HOA to put up a base on tonight at home, So I decided to build a big antenna weight a big ground plane on my pick up truck and believe me I was able to make some noise in between the locals running a home base antenna… I call it a 3/8 wave because is greater than a quarter and smaller than half adding the total length of the antenna plus the length of the coil…. I sure did run into some issues to get it to tune and that was when I tried adding a homemade cap.two pieces of copper pipes one inside of another…. An air vacuum variable capacitor was too expensive for me.. Thanks bud for your knowledge and comment
Thanks for the flowers and for commenting! I did calibrated it again! If you pay attention I cut the video and splice it again when I disconnected it ( just didn’t show re calibration to keep video short) Obviously by swapping end connectors readings will be different, so yes! Nano VNA was calibrated again prior of jumping on the back of my truck to connect antenna. Love comments from people like you, showed me how you pay attention to details. I just received my LP 100A new video coming up today 73’s
Very nice my friend ... I don't really understand the capacitance tube you made or what it does ,, but I know it's probably necessary , I've seen setups like that before . Very good .. hope to work your numbers one day on 38/39/40 LSB .. or maybe 27.455 .. happy DX'ing , 73's to you .. 347 Cowboy .. middle Tennessee 👍
Thanks buddy! Im always roaming between 38/55 lsb usb after 6 pm. All coiled load antennas make capacitance right inside the isolator section and I wasn’t able to achieve that. So my readings were ok but ((30 ohms))..🙄 So I started trying different things to make a capacitor matching device to achieve 50 ohms and when I adjusted the length of the whip the rest of my readings fallen to nearly perfection.
Orale mi hermano! Me alegro que te guste y que me ayas copiado, otro dia con mejores condiciones nos cruzamos en el aire.!!! El argentino de Miami... 102 Mobile)
I gotta say, I m not here to impress anyone . Facts is that you are never going to get those readings from a predator 10k because I already tested it. 2nd I was capable of building a perfect matching and working system instead of buying it off the shelf. Show me a video of you making so many contacts at such a distance with your predator 10k. Hahaha You are full of mud my man!!!!! 73’s
@@102MobileCustomCB you missed my point...you can get those numbers with a dummy-load, they don't mean the antenna is all that strong, just has a good tune reading...as for my Predator 10K, your right, you won't see those numbers with a 10K because the 10K is not a dummy load! lol...I don't do allot of videogates in the mobile, but here's one with Bozo in Idaho a few years back...most of my gates are on the base...Mobile is for keydowns and just around-town talking...as long as your happy with that antenna, thats all that matters...have a good day...Jesse James in Dallas, 854 in the Star is gone
@@jessejamesdallas this antenna is nowhere near similar to a dummy load, in fact when I key up the mic i make my own conditions. I over performed in modulation and distance couple of QTH locals with antennas 30ft up in the air. I even made contact to all South America including Chile and Argentina. Honestly if you put a predator 10k next to mine I warranty I will melt that little thing of you bragging about. 73’s my dear friend
A dummy load is designed for that very purpose, to not radiate. It is a 50 ohm load by design. Predator 10K was designed to bleed money out of those gullible enough to buy into the Golden screwdriver tech's hype pushing it for a quick buck. I run a $30.00 102" SS whip with 5" extension along with same length counterpoise made out of 1/2" grounding braid, that along with a well bonded vehicle and voilà, 1.04 SWR and dead on 50 ohms at 27.185, not to stop there my SWR never exceeds 1.2:1 throughout the 11 meter band. SS mounts and ABR industries ABR195W-uf coax and I've made contacts with stations in Wales, Costa Rica, Nagoya Japan, Rara Tonga New Zealand just to name a few. Not bad for a $30.00 antenna, a little elbow grease bonding the truck and a counterpoise. But by all means enjoy your Predator antenna but I have to wonder, who's the Predator and who's the prey. P.S. All measurements were done on a Bird wattmeter, I know it's old school but it's still the industry standard for accuracy.
Man oh man! Trial and error played a bit part of this build. My first idea was to make it 1/4 wave, after a few errors and keep trying to make it resonate instead of cutting it down I decided to go higher and it came to be 104” total length plus 56”coiled = 160” which is right about 3/8 of a wave (+\-).
Hahahaa Funny, 27.184.50 is what I showed because it happened to be my lowest spot SWR and so close to the middle of the band. For a Frankenstein home brew antenna I think I did alright. Don’t you think?
Im very exited yess Yesterday after I finished installing and posted the previous video, started raining and pewwefff ... capacitor got wet and everything got out of wack... So today I made a smaller but more efficient capacitor to hide underneath and keep it dry. Now im rolling!! 73s from 102” Mobile
C’mon man !! Don’t plant those seeds on my twisted mind!!!! Hahahaha Of course it’s possible, but right now i am at 13’.2” from the ground to the tip Growing on wavelength will increase my height… Won’t be able to drive under any bridge!
@@102MobileCustomCB Well, in the video 'The I-Max-2000 antenna exposed on steroids' I see they did a trick to shorten the lengt with a capacitor half way? Can that been done?
The one I have is Nano VNA 3.6 But I recommend to buy the newest one . They are inexpensive compared to other analyzers and they are an amazing device to own. Only downside is they don’t have instructions. Plenty of videos on UA-cam explaining how to use it.
Hey hey!!! Gracias por el cumplido mi hermano, Estoy pensando fabricar antenas de aluminio para vender (todavía no estoy seguro) Esta de tubería de cobre necesita diferentes capacitores dependiendo de el vehículo instalado. Y es muy rígida , sería muy difícil tener que todos los clientes estén satisfechos!
@@102MobileCustomCB yeah be careful with that thing because that copper will be unforgiving it will not flex as soon as you hit something you'll be rebuilding it but I know copper makes a great antenna
Found your vids and enjoy building antennas myself.
Hopefully catch ya on 28 am or 38 lsb.
1zero1 New Orleans 🤘 🤩
Man oh man!
Awesome!
Building antennas is what I enjoy the most out of this hobby.
Your handle sounds familiar to me .
I’m sure we’ll cross paths on the airwaves!
I love your attention to detail. And give anything to see what you could do with a base antenna. Love the videos brother 73rds
Thanks my friend.
That's awesome man
Interesting project. Never thought to try using a 3/8 wave antenna. It would be interesting to do an A/B signal comparison between that and a 1/4 wave whip or a Wilson 1000/5000 etc. Then you'll really know if the actual radiation is getting out better. Low SWR is important but after a certain point, it hardly makes much difference. For example, I actually won a 4 pill shootout even though the match wasn't all that amazing (like 1.4). But I spent a good amount of time optimizing the forward gain of my vehicle. Cheers from Orange County, CA.
Yesssss Yesssss optimal ground plane or directional gain is very important..
Awesome about your contest winning!
Let me tell you, I’ve had and used most of them off the shelves antennas….
Differences were phenomenal in comparison using a signal strength meter.
@@102MobileCustomCB The off the shelf antennas are most fun burning them haha! Like the firestick. But back to the A/B comparision, it would be I think great video content to show the difference. Because seeing is believing.
Nice set up. Great to see you using your network analyzer also. I've been starting to use mine more lately and it's getting easier to remember how to operate it. Thanks for the tour of your mobile station. DragN'Fly in tennessee saying 73
Right there right theeeere!
Nano vna is the best device I’ve ever bought!
Check out my center console water cooled rci radio!
Now just finished another copper antenna for freightliner cascadia.
Good job.
Thanks bud!
@@102MobileCustomCB Stop in for Old Radio Night soon.
Nice, I always love a good homemade antenna.
Thanks for the flowers!
Oh man oh man….. I tell ya… I tried almost every antenna that you can possibly imagine.
Never got nowhere near the results I got with this one.
With 400w Mobile and this antenna i make same contacts as my local friend running 100w and a 2 element beams 30 ft up in the air.
@@102MobileCustomCB I have a homemade vertical dipole that is matched almost perfectly and with about 60w I can hit from the Bahamas to Canada. My antenna uses 1/2" galvanized conduit. I think the only good antennas are home built ones!
You do not need a loading coil on a 3/8 wave antenna. Any straight length greater than a quarter wave (8.6ft) and less than three eights wave (12.9ft) may be tuned only with a variable cap from center of feed to ground. 3/8 wave antennas are inductive reactive and need capacitance to tune. If you have a coil it is not a 3/8 wave antenna, it has to be greater than a 3/8, or less than a quarter wave to run a coil. Bottom of my QRZ bio I have info on antennas greater than quarter wave. A 3/8 wave mounted on top of truck bed (about 4 feet from ground) should be almost 17 feet tall. Most traffic lights hang between 12.5 and 14.5 feet. Use extreme caution on streets, as a 3/8 wave is oversize and will hit many objects and trees. I know they will hit things, I ran a 128 inch whip, 11 meter home brew, for my CB on my Samurai roof 30 years ago. Peace, AC4KV 73's Keep experimenting. A good way to learn.
Let me say that I love comments from people like you that actually know a think or two more than I do.. I am not an expert nor an engineer I am just a handy enthusiastic….
It all started when I wanted to compete with the locals and I wasn’t allowed by the HOA to put up a base on tonight at home, So I decided to build a big antenna weight a big ground plane on my pick up truck and believe me I was able to make some noise in between the locals running a home base antenna…
I call it a 3/8 wave because is greater than a quarter and smaller than half adding the total length of the antenna plus the length of the coil…. I sure did run into some issues to get it to tune and that was when I tried adding a homemade cap.two pieces of copper pipes one inside of another….
An air vacuum variable capacitor was too expensive for me..
Thanks bud for your knowledge and comment
I like how you got it built up in your truck I like the way you got it set up that’s pretty cool looks very nice this is Shepfc1 73’s
ua-cam.com/video/brPQNd04NOM/v-deo.html
Your initial numbers were great. You changed the configuration by dropping the coax and should have calibrated the VNA again.
Thanks for the flowers and for commenting!
I did calibrated it again! If you pay attention I cut the video and splice it again when I disconnected it ( just didn’t show re calibration to keep video short)
Obviously by swapping end connectors readings will be different, so yes! Nano VNA was calibrated again prior of jumping on the back of my truck to connect antenna.
Love comments from people like you, showed me how you pay attention to details.
I just received my LP 100A new video coming up today
73’s
Saludos hermano excelente video y excelente antena 73's la 305 Mr Mario desde el pueblito de sebring
Gracias mi hermano!
73’s
102 Mobile, el argentino de Miami
Nice mi amigo 👍
Gracias fiera!
73’s
4/24/24 i am just now seeing this and wonder do you still run this antenna.
I have been experimenting with similar antennas so far all good.
Very nice my friend ... I don't really understand the capacitance tube you made or what it does ,, but I know it's probably necessary , I've seen setups like that before . Very good .. hope to work your numbers one day on 38/39/40 LSB .. or maybe 27.455 .. happy DX'ing , 73's to you ..
347 Cowboy .. middle Tennessee 👍
Thanks buddy! Im always roaming between 38/55 lsb usb after 6 pm.
All coiled load antennas make capacitance right inside the isolator section and I wasn’t able to achieve that.
So my readings were ok but ((30 ohms))..🙄
So I started trying different things to make a capacitor matching device to achieve 50 ohms and when I adjusted the length of the whip the rest of my readings fallen to nearly perfection.
Here is the video of my first capacitor, but on a rainy day everything was out of wack.
ua-cam.com/video/r7d3QUjVwdc/v-deo.html
Orale my friend que bueno que ablas español felisidades isistes buen trabajo , yo te escuche en la ciudad de wichita kansas !!!🏍️
Orale mi hermano! Me alegro que te guste y que me ayas copiado, otro dia con mejores condiciones nos cruzamos en el aire.!!! El argentino de Miami... 102 Mobile)
A Dummy Load will show the same reading! I'll put my Predator 10K up against your home made gizmo any day of the week! lol
I gotta say, I m not here to impress anyone .
Facts is that you are never going to get those readings from a predator 10k because I already tested it.
2nd I was capable of building a perfect matching and working system instead of buying it off the shelf.
Show me a video of you making so many contacts at such a distance with your predator 10k.
Hahaha
You are full of mud my man!!!!!
73’s
@@102MobileCustomCB you missed my point...you can get those numbers with a dummy-load, they don't mean the antenna is all that strong, just has a good tune reading...as for my Predator 10K, your right, you won't see those numbers with a 10K because the 10K is not a dummy load! lol...I don't do allot of videogates in the mobile, but here's one with Bozo in Idaho a few years back...most of my gates are on the base...Mobile is for keydowns and just around-town talking...as long as your happy with that antenna, thats all that matters...have a good day...Jesse James in Dallas, 854 in the Star is gone
@@jessejamesdallas this antenna is nowhere near similar to a dummy load, in fact when I key up the mic i make my own conditions.
I over performed in modulation and distance couple of QTH locals with antennas 30ft up in the air.
I even made contact to all South America including Chile and Argentina.
Honestly if you put a predator 10k next to mine I warranty I will melt that little thing of you bragging about.
73’s my dear friend
A dummy load is designed for that very purpose, to not radiate. It is a 50 ohm load by design.
Predator 10K was designed to bleed money out of those gullible enough to buy into the Golden screwdriver tech's hype pushing it for a quick buck.
I run a $30.00 102" SS whip with 5" extension along with same length counterpoise made out of 1/2" grounding braid, that along with a well bonded vehicle and voilà, 1.04 SWR and dead on 50 ohms at 27.185, not to stop there my SWR never exceeds 1.2:1 throughout the 11 meter band.
SS mounts and ABR industries ABR195W-uf coax and I've made contacts with stations in Wales, Costa Rica, Nagoya Japan, Rara Tonga New Zealand just to name a few.
Not bad for a $30.00 antenna, a little elbow grease bonding the truck and a counterpoise.
But by all means enjoy your Predator antenna but I have to wonder, who's the Predator and who's the prey.
P.S. All measurements were done on a Bird wattmeter, I know it's old school but it's still the industry standard for accuracy.
I'm in a hoa with antenna restrictions. Been running a center fed dipole on a slope from second floor. Does ok. Any ideas on something better ?
You should’ve made it shows how you made it that’s pretty awesome I like that antenna that is so cool I like to know how you made it
Man oh man!
Trial and error played a bit part of this build.
My first idea was to make it 1/4 wave, after a few errors and keep trying to make it resonate instead of cutting it down I decided to go higher and it came to be 104” total length plus 56”coiled = 160” which is right about 3/8 of a wave (+\-).
NanoVNC is the tits. you can really engineer an antenna at home with that. great work
Yes yes yes!!!
Wasn’t easy but I got it done!!!
Thanks for the flowers buddy!
Ce ter of the band is 27.185mHz, not where you showed it to be.
Hahahaa
Funny, 27.184.50 is what I showed because it happened to be my lowest spot SWR and so close to the middle of the band.
For a Frankenstein home brew antenna I think I did alright. Don’t you think?
Good antenna, 5502 Tres patines Hollywood Fl.
Hey hey asere k bolaaa!!
I always say hi to Mr. Riff Raff which is the one I always hear, but I wave a hand out to all broward country
Wow. I’m excited and I know you are. Hope to chat with you on the airwaves
Charles L. PriceIII
Im very exited yess
Yesterday after I finished installing and posted the previous video, started raining and pewwefff ... capacitor got wet and everything got out of wack...
So today I made a smaller but more efficient capacitor to hide underneath and keep it dry.
Now im rolling!!
73s from 102” Mobile
Nice. I will recommend changing that stock mic to something better. that radio will sound much better.. stock mic sounds like a Tin can.
I was just adding channel buttons and a 6 pin socket to an RD 104 at that time
Using It now, Amazing sound
Can you make a 7/8Wave antenna? Would that not be better?
C’mon man !! Don’t plant those seeds on my twisted mind!!!!
Hahahaha
Of course it’s possible, but right now i am at 13’.2” from the ground to the tip
Growing on wavelength will increase my height…
Won’t be able to drive under any bridge!
@@102MobileCustomCB Well, in the video 'The I-Max-2000 antenna exposed on steroids' I see they did a trick to shorten the lengt with a capacitor half way? Can that been done?
Where did you get the analyzer what model number.is.it
The one I have is Nano VNA 3.6
But I recommend to buy the newest one .
They are inexpensive compared to other analyzers and they are an amazing device to own.
Only downside is they don’t have instructions. Plenty of videos on UA-cam explaining how to use it.
73 Buenas noches saludos espero que todo bien muy bonita antena apenas para hacer DX Donde las venden ese tipo de Antenas 8 Nomas
Hey hey!!!
Gracias por el cumplido mi hermano,
Estoy pensando fabricar antenas de aluminio para vender (todavía no estoy seguro)
Esta de tubería de cobre necesita diferentes capacitores dependiendo de el vehículo instalado.
Y es muy rígida , sería muy difícil tener que todos los clientes estén satisfechos!
Hope you don't hit a big bird or a tree limb
Hahahahaha
Im actually at 13’.2” from the ground..
I have to look up where I drive through.
@@102MobileCustomCB yeah be careful with that thing because that copper will be unforgiving it will not flex as soon as you hit something you'll be rebuilding it but I know copper makes a great antenna