So... If you set up one single channel on your radio, you can have the repeater on VHF, with a huge transmit offset to the UHF input of your cross-band. Then, you can configure your cross-band repeater to have the same PL tone as the repeater you want to hit, and have some crazy receive selection, like a different PL and a DCS tone. This would mean that your radio listens to the main repeater, and you hit your cross-band whenever you need it... But the cross-band doesn't transmit back the other way, because you enabled some crazy combination of PL and DCS.
Excellent description of how Cross Band Repeating works. Many thanks for the video! I bought an Icom 5100 rig earlier this year and had used it minimally. I found out recently that it has cross-band repeating capabilities and that really got my mind working on how I can set it up so that I can go out for a walk around my neighborhood with my handheld and check in on the local nets on extremely low power. Our radio club also supports special charity events and provides communications. I can't wait until the next event comes along so that I can make use of my new found knowledge on how it all works! Great video.
Hello. I have use crossband repeater functionality in a vehicle in the past, and I did encounter the same thing as you initially did. I used a Yaesu quad bander to do that back then. Yes, the rig got hot when it was configured to work with another repeater. That's a draw back in itself, as you point out. However, I encountered another problem at the same time, too. Unless the repeater in town fully dropped its carrier, my mobile repeater wouldn't allow me to transmit a signal into it from my HT. So I essentially couldn't use my own mobile repeater, until the carrier of the repeater in town dropped. That was annoying and frustrating. At that time, my HT could easily hear the repeater in town, but it couldn't transmit into it. The configuration you pointed out makes the most sense for this type of scenario. I never even thought to do it that way. I'm glad that you did, and that you were kind enough to share the information. A great big thank you, goes out to you! I sincerely appreciate this! '73s
If you use Option One anyway, be sure to set your mobile rig's 70cm transmit power as low as you can get it. Single-digit milliwatts (1, 2, 5) will be plenty to raise your HT within walking distance, and it'll tolerate a high duty cycle without stressing your transmitter.
I recently had a conversation with Dave from Powerwerx who recommended to me that only 10 watts on each frequency is recommended. I know I tried using Turbo mode on my Anytone 578 and the radio got hot really quick and I realized that this was a recipe for disaster. I rarely use this mode for repeater work, typically for simplex but great idea for a busy repeater as long as your HT can receive that long signal. Thank you for the video.
Okay, I'm late. However, the long term ham does not need a dual watch, anything. Still, a cross band tx of some sort is required. You could always carry an extra HT. Yep, back in the nineties it was cumbersome but, that worked. UHF for the cross band and a VHF tx or, rx like a scanner to listen to net control. Its always been good practice to own and carry more than one radio. Or, lately there have been special events where, more than one type of net on two or more bands and their respective repeaters. That can put a lot of work on a tri band or quad band radio. This is why I still like to employ mono band radios and individual quarter wave antennas.
That is actually a great way of doing it. One if those, why didn't i think of that, ideas. I use cross band at my house. Walk around with a Baofeng on 2 meters and talk on the local 440 repeater. Thanks for the video.
Hey a big thumbs up to you 👍 that's a fantastic idea , will never forget the first time I did crossband and left then realized the squelch had opened up and locked up the repeater for several hours , then realized what I did I hurried back to turn it off and I could smell the radio 20 feet away but it survived so now I use tones on both xmit and rec and lower power but your idea is a great one so will try it tomorrow and hopefully it will be the answer . Thanks agaiin kc5ulu
Thanks, Makes perfect sense to me. My problem at home though is that my baofeng doesn't seem to receive well at all and I would love to hear the traffic from my vertical base antenna while doing chores around the property.
Outstanding video! Your recommend version sure does simplify things! I know one of my first attempts of using crossband repeat didn't go well. Many of the repeater owners around here don't like when people try to use crossband repeat through their repeaters.
Thanks for the information. I have one HT that does cross band; the TYT TH-UV8000E. It pumps out 8-10 watts in a simplex configuration. It's more limited than a repeater, but set on a high point it will extend TX/RX range where terrain obscures signals. It's like having two HTs in one.
You don't technically need dual receive for B method. Some radios will allow arbitrary splits -- whereas a normal VHF repeater offset will often be 600kHz, you will set your radio up like any other repeater, but the offset will be hundreds of MHz. Yaesu and Baofeng will do this on a single channel, I believe.
Hey Dave love your program thank you for sharing you're a good guy great presentation you had one of the best thank you again Dan you help me made up my mind😊
Thanks for the two-method explanation. I only have a handheld, but I am looking at a mobile unit that will include the crossband relay. I like the second method. I was at a rally in the middle of Missouri and heard everything but could say nothing on my 5W Baofeng. I was thinking an outbound relay is all I needed, and it would save some of the double-delay built into repeating. Thanks again.
Great video, and it makes a lot of sense, but unfortunately for me I sit in a situation where my ht does not pick up any signal from the repeater due to line of sight issues, but my base radio has a big antenna that does, so I am stuck with the "traditional" way. Luckily not a lot of traffic on the repeater. But will remember this method when I need it one day!
I used a crossband repeater to fill in a 'gap' in coverage once in Tompkins County, NY. There was a steep ridgeline that covered part of a bike race route that wouldn't allow the repeater to be used. All it took was parking at the top of the ridge with my vehicle in crossband repeat.
fantastic, i was just thinking about using the mobile radio in the car to xband to my local repeater and my HT in the house to save me going to the shack
I’ll be setting up like this for the Head for the Hills rally this weekend. I was expecting to need 2m, so I built a 2m roll up J-Pole last weekend and did a dry run… band plan came out yesterday and we’re using 70cm… I don’t have a 70cm antenna for my POTA setup, but do have a dual band antenna on the car. So it looks like the mobile rig is getting set up on Crossband Repeat and I’m going to rock a Baofeng at the Rest Stop. 😂🤷🏻♂️ It’s not stupid if it works.
When I first started looking into this that was what I had in mind but your video id the first I have found on it. Thank you for the video. You've earned a "Like", "Sub", & a comment!
Nothing wrong with what you are saying. This can work if it is great do it. Might be a good first option. My radio calls this locked band repeat not cross band. If you where in a situation where the HT can't hear the repeater cross band would be required. Turning the mobel 440 transmitter to the lowest power settings might be helpful.
Thanks, was using method one for my house so I could use HT all around yard and house and not be tied to shack ….when I got back to shack noticed how hot mobile was…will try method two next time. Do you have to use a repeater or can you use the mobile rig in car as the main repeater? In other words not be connected to a large repeater tower buy use the vehicle as the repeater
Excellent video, concise. Would you also want to enable a PL tone on the receive side of your mobile to minimize other transmissions from cross band repeating to the down town repeater? Wondering if PL tones are crossband repeated or do you enable the PL tone for the down town repeater at your mobile TX side? thx
I do it all the time on my FTM400 at work because it's a steel building. That's an undocumented feature of the FTM400. The three buttons under the power then hit power and there you go. One VFO has to be UHF and the other VHF. Then I have to figure out which is the volume knob. 😉
@@MeOnTech I've never used it on heavy traffic. I turn it on during drive time low pwr by low pwr. Usually only about an hour. I set it to high pwr by low pwr when I'm in the boat on lake Alvarado. That's usually hit and miss. Depends where I park the truck. It never hits high pwr unless I transmit at the lake. I also have a TYT TH9800 in the El Camino that has a crossband repeater built in, but I only leave it low pwr both sides. It doesn't say Yaesu on it, so I don't trust it to not run away.
The Kenwoods are 100% duty cycle at 25 watts. If you had it on 50 watts that explains the overheating. Crossbanding uses 100% of the duty cycle in that mode.
Simplex twist in the spirit of Option B? Could you accomplish a simplex version of B, to reduce the duty cycle on the cross band mobile, by using a RX tone on the simplex frequency? Most if not all the traffic received by the simplex frequency wouldn’t have the tone so the mobile doesn’t open squelch and doesn’t transmit. Your HT won’t have the tone set, so it will break squelch whenever there is activity on the frequency. Your transmission for the HT will go back to the cross band repeater and out the appropriate simplex frequency.
Yes if you are re transmitting a repeater the opposite link out on simplex is going have be turned down 10w and add a fan. But simplex to simplex works yes you need older twin bander HT 2 vols 2 squelches duplex on/off function to here yourself or use two radios
This is a fine example/alternative, however in our area, there are many rf shadows and hills/valleys, and the ht can not hit or hear the repeater, hence we are relegated to using method A. De k8mh
Not a hammie (yet) but your explanation was simplex enough (play on words) for me to understand that opt 2 allowed only your mobile to receive only your ht tx. I saw the one commenter mention a PL tone. Would that be a possible solution (im curious as well) WRUJ346 in Houston Pennsylvania
I'm studying for basic exam. I have a 2 Baofeng UV-5R.(can 1 be a repeater?) What's the "magic" setup on your mobile rig? Dual band HT setup is easy. I like your 2nd suggestion, simpler & safer. 73
Question.....I can input (+/-).about 300.000 as an offset. It appears to give me a 147.000 receive and a 447.000 (147.000 ,+ 300.000 offset). Will this work? Baofeng uv-5r accepts the numbers. I did not test it yet.
I need help.. I have a repeater which Tx on VHF and Rx on UHF. I need to cross band with my uv 5 r but i am not getting any idea how to do that. I have kenwood D710A as base.
The only problem with this is you may reach the repeater transmitting through your HT to the mobile, but not to be able to hear the repeater on your HT without the mobile. KD2MNR
No. In the video, this is all predicated upon you being in an area where you are too far to TRANSMIT to the repeater with the HT, but close enough to RECEIVE the repeater on the HT.
Great video, thanks. Now, I do have a question. I thought one of the main reasons you needed to cross band, was due to your HT not being able to reach or hear the repeater. If unable to hear the repeater, it would appear that this would not work. Am I missing something? Again, thanks for the video. I found this very helpful.
That's exactly what I was thinking. I was stoked about learning about cross band repeat, but now I don't know if I'm going to do it. I think it's totally fine if your HT can receive the repeater fine, but has a hard time getting out.
Just remember if your HT is outside the reach of rx of the tower and you are using your mobile as cross band repeater it will over heat as he said (if that repeater gets a lot of traffic, in his example of a bike event) My tyt8000 ht used as a dual band cross repeat as in first example got hot within 30 minutes of Just Me testing it. Plus battery wear down. Repeaters are usually commercial grade and cost $$$ to solve these issues. Tyt has a good cross band. Note if your ht does not have an A/B dual watch, you can use a large Offset when you program. Ex 462.500 offset 300.000 (not your basic +5 or -5)
Not dual watch, a and b channel etc... the ht does need to be dual band though. It also needs to have a non standard "offset" or "split" programmed for the one way cross band repeat scheme to work. Most dual band ht's have that capability.
I have a question concerning the frequencies used for cross band. for 2m/440 have any ham groups decided on the preferred frequencies to use. (dedicated pair) or do most just try and find a pair not used in the area? Unlike standard Repeaters who try an coordinate their frequency to reduce possible QRM.
Do you need a ground plane for a quad band antenna set up on a normal shingle roof running 50 watts or can you let it sit in a mount and run the coax right to the radio
Great video. I have a ftm-300. From a HT I can transmit UHF and receive the VHF signal on another HT. But I can’t transmit from VHF to UHF. Using Analog on both HTs. I get a screen message “Tx Prohibit.” Why? Any thoughts why I can only go one-way?
@@MeOnTech I have the same radio and Ed Fong's DBJ-2 roll up. I've never tried it under the conditions you describe. I appreciate you putting out this video, probably saved me some grief. Very elegant solution. Thanks.
Why couldn't you set up your hand held in duplex, Tx on UHF channel to your mobile and R VHF side from the repeater. The offset function would allow TX and R instead of using A simplex and B simplex with TDR on. On my Baofeng UV5R I receive on 146.610 from repeater and transmit by pushing PTT switch to FTM 400 at 446.500 MHz. The offset is a +299.890. My FTM 400 has two simplex frequencies while in cross and, R at 446.500 and Tx to repeater at 146.010, same way you describe in video.
Why would you put 50w on the mobile rig lol, the mibile rig would be 100% duty cycle on lowpower 5watts, your mobile rig would has abillty hit the rptr
I love this feature but I don't recommend using it on portable radios unless you have to. I recommend using only the lowest power setting on both bands, and even then these radios can heat up very quickly if there's no down time in your contact. I would NEVER use medium or high power on portable radios because you have to remember the radio is potentially being keyed full time throughout the entire contact. That's like setting your portable to high power and wrapping a rubber band around the PTT walking away for 5 or 10 minutes. It's not going to end well for your radio. You should also never use this feature on a repeater channel because there are times repeaters may not drop for extended periods.
Thanks for the video. It really made sense why you chose option B
So... If you set up one single channel on your radio, you can have the repeater on VHF, with a huge transmit offset to the UHF input of your cross-band.
Then, you can configure your cross-band repeater to have the same PL tone as the repeater you want to hit, and have some crazy receive selection, like a different PL and a DCS tone.
This would mean that your radio listens to the main repeater, and you hit your cross-band whenever you need it... But the cross-band doesn't transmit back the other way, because you enabled some crazy combination of PL and DCS.
Excellent description of how Cross Band Repeating works. Many thanks for the video! I bought an Icom 5100 rig earlier this year and had used it minimally. I found out recently that it has cross-band repeating capabilities and that really got my mind working on how I can set it up so that I can go out for a walk around my neighborhood with my handheld and check in on the local nets on extremely low power. Our radio club also supports special charity events and provides communications. I can't wait until the next event comes along so that I can make use of my new found knowledge on how it all works! Great video.
Hello. I have use crossband repeater functionality in a vehicle in the past, and I did encounter the same thing as you initially did. I used a Yaesu quad bander to do that back then. Yes, the rig got hot when it was configured to work with another repeater. That's a draw back in itself, as you point out. However, I encountered another problem at the same time, too. Unless the repeater in town fully dropped its carrier, my mobile repeater wouldn't allow me to transmit a signal into it from my HT. So I essentially couldn't use my own mobile repeater, until the carrier of the repeater in town dropped. That was annoying and frustrating. At that time, my HT could easily hear the repeater in town, but it couldn't transmit into it. The configuration you pointed out makes the most sense for this type of scenario. I never even thought to do it that way. I'm glad that you did, and that you were kind enough to share the information. A great big thank you, goes out to you! I sincerely appreciate this! '73s
If you use Option One anyway, be sure to set your mobile rig's 70cm transmit power as low as you can get it. Single-digit milliwatts (1, 2, 5) will be plenty to raise your HT within walking distance, and it'll tolerate a high duty cycle without stressing your transmitter.
The Kenwood has L, M, and H. I was running L.
Nice video. I just started setting this up with a Baofeng UV5R and an Anytone 578. Your explanation with diagrams helps immensely! Thanks!!
This is fundamental and I never even thought of it. Thank you.
I recently had a conversation with Dave from Powerwerx who recommended to me that only 10 watts on each frequency is recommended. I know I tried using Turbo mode on my Anytone 578 and the radio got hot really quick and I realized that this was a recipe for disaster. I rarely use this mode for repeater work, typically for simplex but great idea for a busy repeater as long as your HT can receive that long signal. Thank you for the video.
Good info
Okay, I'm late. However, the long term ham does not need a dual watch, anything. Still, a cross band tx of some sort is required. You could always carry an extra HT. Yep, back in the nineties it was cumbersome but, that worked. UHF for the cross band and a VHF tx or, rx like a scanner to listen to net control. Its always been good practice to own and carry more than one radio. Or, lately there have been special events where, more than one type of net on two or more bands and their respective repeaters. That can put a lot of work on a tri band or quad band radio. This is why I still like to employ mono band radios and individual quarter wave antennas.
Good idea
That is actually a great way of doing it.
One if those, why didn't i think of that, ideas.
I use cross band at my house. Walk around with a Baofeng on 2 meters and talk on the local 440 repeater.
Thanks for the video.
Hey a big thumbs up to you 👍 that's a fantastic idea , will never forget the first time I did crossband and left then realized the squelch had opened up and locked up the repeater for several hours , then realized what I did I hurried back to turn it off and I could smell the radio 20 feet away but it survived so now I use tones on both xmit and rec and lower power but your idea is a great one so will try it tomorrow and hopefully it will be the answer . Thanks agaiin kc5ulu
Wow
Thanks, Makes perfect sense to me. My problem at home though is that my baofeng doesn't seem to receive well at all and I would love to hear the traffic from my vertical base antenna while doing chores around the property.
Outstanding video! Your recommend version sure does simplify things! I know one of my first attempts of using crossband repeat didn't go well. Many of the repeater owners around here don't like when people try to use crossband repeat through their repeaters.
I agree...Repeater owners typically frown on it. The B option seems to eliminate the issues they have.
Really well done, thank you for setting up the graphics and walking through it all, as a new ham I was trying to figure out how I could do this.
Thanks for the information. I have one HT that does cross band; the TYT TH-UV8000E. It pumps out 8-10 watts in a simplex configuration. It's more limited than a repeater, but set on a high point it will extend TX/RX range where terrain obscures signals. It's like having two HTs in one.
You could use it as a repeater in a car then? Or put it someplace high to extend other radios?
You don't technically need dual receive for B method. Some radios will allow arbitrary splits -- whereas a normal VHF repeater offset will often be 600kHz, you will set your radio up like any other repeater, but the offset will be hundreds of MHz. Yaesu and Baofeng will do this on a single channel, I believe.
I would be nice to try
Hey Dave love your program thank you for sharing you're a good guy great presentation you had one of the best thank you again Dan you help me made up my mind😊
Thanks
Looking at setting up Crossland repeat at my qth and this has been the exact information I was looking for. Thank you.
Thanks for the two-method explanation. I only have a handheld, but I am looking at a mobile unit that will include the crossband relay. I like the second method. I was at a rally in the middle of Missouri and heard everything but could say nothing on my 5W Baofeng. I was thinking an outbound relay is all I needed, and it would save some of the double-delay built into repeating.
Thanks again.
Great video, and it makes a lot of sense, but unfortunately for me I sit in a situation where my ht does not pick up any signal from the repeater due to line of sight issues, but my base radio has a big antenna that does, so I am stuck with the "traditional" way. Luckily not a lot of traffic on the repeater. But will remember this method when I need it one day!
Fantastic explanation. Makes complete sense. Just about to start experimenting with cross band repeating. Thanks!
Thank you for this informative video coz I learned something new. No wonder my mobile rig got so hot. Good thing I noticed it right away. 73s.
I used a crossband repeater to fill in a 'gap' in coverage once in Tompkins County, NY. There was a steep ridgeline that covered part of a bike race route that wouldn't allow the repeater to be used. All it took was parking at the top of the ridge with my vehicle in crossband repeat.
fantastic, i was just thinking about using the mobile radio in the car to xband to my local repeater and my HT in the house to save me going to the shack
Thanks for clarifying this.
Best Wishes from Montana! M.H.
Very good and very applicable to public service events. I will try it with the HT in my pocket and getting in and out of the mobile.
I run an ICOM IC-2370A and it has cross band repeating built in, love using it in remote locations with HT’s
I’ll be setting up like this for the Head for the Hills rally this weekend. I was expecting to need 2m, so I built a 2m roll up J-Pole last weekend and did a dry run… band plan came out yesterday and we’re using 70cm… I don’t have a 70cm antenna for my POTA setup, but do have a dual band antenna on the car. So it looks like the mobile rig is getting set up on Crossband Repeat and I’m going to rock a Baofeng at the Rest Stop. 😂🤷🏻♂️ It’s not stupid if it works.
Ham radio and guitar! Glad to know I am not alone. Thx for the info.
Great video. Thank you.
When I first started looking into this that was what I had in mind but your video id the first I have found on it.
Thank you for the video. You've earned a "Like", "Sub", & a comment!
Nice, quick explanation on how you used TRD. Thumbs up, subscribed!
Brilliant! Thanks.
Awesome video. Trying to set up cross band at my home station 50w so I can use my mobile and other HTs
Nothing wrong with what you are saying. This can work if it is great do it. Might be a good first option. My radio calls this locked band repeat not cross band. If you where in a situation where the HT can't hear the repeater cross band would be required. Turning the mobel 440 transmitter to the lowest power settings might be helpful.
Great explanation, even I understand this one.
Glad you liked it
Thanks, was using method one for my house so I could use HT all around yard and house and not be tied to shack ….when I got back to shack noticed how hot mobile was…will try method two next time. Do you have to use a repeater or can you use the mobile rig in car as the main repeater? In other words not be connected to a large repeater tower buy use the vehicle as the repeater
Best option is get two motorola radios vhf uhf . 5 usd ebay cable. You cab built bullet proof cross band rep
Thank you for sharing. I will definitely remember this. A new ham . 73
Very interesting, thank you. Can't you set a Time out timer on the mobile rig?
Very well explanined, diagrams reallly helped me understand.
Excellent video, concise. Would you also want to enable a PL tone on the receive side of your mobile to minimize other transmissions from cross band repeating to the down town repeater? Wondering if PL tones are crossband repeated or do you enable the PL tone for the down town repeater at your mobile TX side? thx
You are correct. PL tone for the down town repeater at your mobile TX side
Thank you sir,,,,,,,🇬🇧👍🏾
I do it all the time on my FTM400 at work because it's a steel building. That's an undocumented feature of the FTM400. The three buttons under the power then hit power and there you go. One VFO has to be UHF and the other VHF. Then I have to figure out which is the volume knob. 😉
Have you used the FTM400 during heavy NET traffic on the repeater? How does it handle the high duty cycle?
@@MeOnTech I've never used it on heavy traffic. I turn it on during drive time low pwr by low pwr. Usually only about an hour. I set it to high pwr by low pwr when I'm in the boat on lake Alvarado. That's usually hit and miss. Depends where I park the truck. It never hits high pwr unless I transmit at the lake. I also have a TYT TH9800 in the El Camino that has a crossband repeater built in, but I only leave it low pwr both sides. It doesn't say Yaesu on it, so I don't trust it to not run away.
Thank you
The Kenwoods are 100% duty cycle at 25 watts. If you had it on 50 watts that explains the overheating. Crossbanding uses 100% of the duty cycle in that mode.
Simplex twist in the spirit of Option B? Could you accomplish a simplex version of B, to reduce the duty cycle on the cross band mobile, by using a RX tone on the simplex frequency? Most if not all the traffic received by the simplex frequency wouldn’t have the tone so the mobile doesn’t open squelch and doesn’t transmit. Your HT won’t have the tone set, so it will break squelch whenever there is activity on the frequency. Your transmission for the HT will go back to the cross band repeater and out the appropriate simplex frequency.
Would you hear yourself while using this set up?
Yes if you are re transmitting a repeater the opposite link out on simplex is going have be turned down 10w and add a fan. But simplex to simplex works yes you need older twin bander HT 2 vols 2 squelches duplex on/off function to here yourself or use two radios
Great option. Thanks for sharing.
This is a fine example/alternative, however in our area, there are many rf shadows and hills/valleys, and the ht can not hit or hear the repeater, hence we are relegated to using method A. De k8mh
Option 2 assumes the Portable can receive downlink from repeater.
Not a hammie (yet) but your explanation was simplex enough (play on words) for me to understand that opt 2 allowed only your mobile to receive only your ht tx. I saw the one commenter mention a PL tone. Would that be a possible solution (im curious as well) WRUJ346 in Houston Pennsylvania
superb video.. THANK YOU
Thanks
I'm studying for basic exam. I have a 2 Baofeng UV-5R.(can 1 be a repeater?) What's the "magic" setup on your mobile rig? Dual band HT setup is easy. I like your 2nd suggestion, simpler & safer. 73
In option 2 you receive from the repeater, i guess you need to be in range with your HT to make that work, am i missing something?
Good information - Thanks
Where did the 149.940 come from. A typo probably. Dean AF6MC
Which side on the Kenwood do you make control, with PTT flashing?
Question.....I can input (+/-).about 300.000 as an offset. It appears to give me a 147.000 receive and a 447.000 (147.000 ,+ 300.000 offset). Will this work? Baofeng uv-5r accepts the numbers. I did not test it yet.
Awesome video.
Good idea 💡
This is why a lot of people don’t use cross band repeat!
I need help..
I have a repeater which Tx on VHF and Rx on UHF. I need to cross band with my uv 5 r but i am not getting any idea how to do that. I have kenwood D710A as base.
You can program a split channel that transmits on 440 and listens on. 2m. That’s what I do.
Are you making the split mode on the HT or the Kenwood? My TIDRadio TD-H8 does not have the split function.
The only problem with this is you may reach the repeater transmitting through your HT to the mobile, but not to be able to hear the repeater on your HT without the mobile. KD2MNR
No. In the video, this is all predicated upon you being in an area where you are too far to TRANSMIT to the repeater with the HT, but close enough to RECEIVE the repeater on the HT.
Great video, thanks. Now, I do have a question. I thought one of the main reasons you needed to cross band, was due to your HT not being able to reach or hear the repeater. If unable to hear the repeater, it would appear that this would not work. Am I missing something? Again, thanks for the video. I found this very helpful.
That's exactly what I was thinking. I was stoked about learning about cross band repeat, but now I don't know if I'm going to do it. I think it's totally fine if your HT can receive the repeater fine, but has a hard time getting out.
Just remember if your HT is outside the reach of rx of the tower and you are using your mobile as cross band repeater it will over heat as he said (if that repeater gets a lot of traffic, in his example of a bike event)
My tyt8000 ht used as a dual band cross repeat as in first example got hot within 30 minutes of Just Me testing it. Plus battery wear down.
Repeaters are usually commercial grade and cost $$$ to solve these issues.
Tyt has a good cross band.
Note if your ht does not have an A/B dual watch, you can use a large Offset when you program. Ex 462.500 offset 300.000 (not your basic +5 or -5)
Not dual watch, a and b channel etc... the ht does need to be dual band though. It also needs to have a non standard "offset" or "split" programmed for the one way cross band repeat scheme to work. Most dual band ht's have that capability.
Gooooo0000d 👍👍👍👍👍👍👍‼️
I have a question concerning the frequencies used for cross band. for 2m/440 have any ham groups decided on the preferred frequencies to use. (dedicated pair) or do most
just try and find a pair not used in the area? Unlike standard Repeaters who try an coordinate their frequency to reduce possible QRM.
Do you need a ground plane for a quad band antenna set up on a normal shingle roof running 50 watts or can you let it sit in a mount and run the coax right to the radio
Great video. I have a ftm-300. From a HT I can transmit UHF and receive the VHF signal on another HT. But I can’t transmit from VHF to UHF. Using Analog on both HTs. I get a screen message “Tx Prohibit.” Why? Any thoughts why I can only go one-way?
I'm not sure I believe that your mobile rig has a foot print that big. You need some scale to those circles. What was the radius?
I had a antenna of a 20' mast
but if you hand held can't RX the repeater ?
Maybe I'm not comprehending, but if you can hit the repeater with the HT and the mobile, why would you use cross band???
Its little tricky… Tx of HT is not that far , as Tx of Repeater is quite good. So he is able to get it on HT. only using cross banding for Tx.
Very well explained. Thank you for your desire to do things better!! KJ5AGO
I'd be curious to know what your transmit power level was set to on your TM-V71 when it overheated?
I had a Ed Fong antenna on a 15ft mast running low power.
@@MeOnTech I have the same radio and Ed Fong's DBJ-2 roll up. I've never tried it under the conditions you describe. I appreciate you putting out this video, probably saved me some grief. Very elegant solution. Thanks.
Why couldn't you set up your hand held in duplex, Tx on UHF channel to your mobile and R VHF side from the repeater. The offset function would allow TX and R instead of using A simplex and B simplex with TDR on. On my Baofeng UV5R I receive on 146.610 from repeater and transmit by pushing PTT switch to FTM 400 at 446.500 MHz. The offset is a +299.890. My FTM 400 has two simplex frequencies while in cross and, R at 446.500 and Tx to repeater at 146.010, same way you describe in video.
Excellent explanation. 73 de VU2AXL Aslam
Why would you put 50w on the mobile rig lol, the mibile rig would be 100% duty cycle on lowpower 5watts, your mobile rig would has abillty hit the rptr
"Locked band repeating" is your, "plan B".
Use a plane tone
I love this feature but I don't recommend using it on portable radios unless you have to. I recommend using only the lowest power setting on both bands, and even then these radios can heat up very quickly if there's no down time in your contact. I would NEVER use medium or high power on portable radios because you have to remember the radio is potentially being keyed full time throughout the entire contact. That's like setting your portable to high power and wrapping a rubber band around the PTT walking away for 5 or 10 minutes. It's not going to end well for your radio. You should also never use this feature on a repeater channel because there are times repeaters may not drop for extended periods.
You're not even doing cross band repeating.