Thank you for the second part. My build cams out great. Changed the antennas to be vertical intraday of horizontal. Actually built two of these. One for VHF and one for GMRS.
To dramatically simplify this build, consider a single TYT UV8000 ht. It’s more expensive, but has an actual crossband repeater mode, built in. You’re buying just 1, will push close to 10watts, makes room for a larger battery, half the # of holes and wires, just one antenna, and the total cost ends up being about the same. I connected a separate 100w solar panel and it’s basically an easily movable “temporary” repeater. Add in a car mag mount antenna and a baking tin ground plane, and you have an extremely versatile repeater.
I need some clarification. Help me understand. Why do you need to program any transmit settings in the Receive Radio, as it never transmits, and vice versa on the Transmit Radio?
Thank you for watching our video! Looks like the original link no longer works. Here is the updated link: BAOFENG UV-5R 8W High Power Ham Radio Dual Band Portable Two Way Radio Long Range Rechargeable Handheld Radio: amzn.to/3TtvhgX
Appreciate the video. What distance do you get with this setup? Does the solar charger work good to keep the batteries charged? I would like to do this build for GMRS. Thanks! WSAT505.
The distance depends on several factors. The primary factor being how high is the antenna. Additional factors include density of obstacles around it such as trees and buildings. This repeater setup could also be done with GMRS handheld radios. But you have to make sure that you are on one the designated repeater frequencies and not a simplex frequency that is required to use low power.
power supply? not sure how long 3600mAH batteries will last for on standby, but pre going the whole 9 yards with solar, would battery eliminators connected to a small motorcycle battery be worth doing for a mid term repeater solution?? ""BL-5 Battery Eliminator Replacement for Baofeng UV-5* - pretty sure these have a built in regulator (they're designed to be plugged into car lighter socket) 2 for $20 on Amazon
Yes. It is without a duplexer. You could use a duplexer if you want a different build that I have on my list. There are a number of mobile radios that have a cross band repeater built into them.
Is thier a reason ur doing a neg shift & only.600offset for a reason since normally it's + and 05.000 or is setting the direction and offset doesn't matter as long as it's the same on the all radio s
Transmit is offset Receive by 600KHz. Given this specific setup I had to configure it this way to function. I could have used a duplexer but then it wouldn't have been VHF only or UHF only. It would have used VHF and UHF in order to function. Hopefully that answer helps.
at 22:39 in the video there is a very clear picture of the inside of the setup. You can also check the playback settings of the video and make sure that it is set to at least 720P if not 1080P.
Thank you for the second part. My build cams out great. Changed the antennas to be vertical intraday of horizontal. Actually built two of these. One for VHF and one for GMRS.
You are welcome. Sorry for delay in publishing part 2. We had some life challenges.
To dramatically simplify this build, consider a single TYT UV8000 ht. It’s more expensive, but has an actual crossband repeater mode, built in. You’re buying just 1, will push close to 10watts, makes room for a larger battery, half the # of holes and wires, just one antenna, and the total cost ends up being about the same. I connected a separate 100w solar panel and it’s basically an easily movable “temporary” repeater. Add in a car mag mount antenna and a baking tin ground plane, and you have an extremely versatile repeater.
Thank you for your feedback. I have a couple of radios that do crossband repeater function. I have on my list to do another video.
Nice work! I am putting together something similar, nice tip on the antenna placement.
Glad it helped
I need some clarification. Help me understand. Why do you need to program any transmit settings in the Receive Radio, as it never transmits, and vice versa on the Transmit Radio?
Thank you for your question\feedback. I tend to put both sets of settings in the radios to be thorough.
Love the video and wanted this setup for a local project. Do you have a link the the antenna? Did I miss that link?
Thank you for watching our video! Looks like the original link no longer works. Here is the updated link: BAOFENG UV-5R 8W High Power Ham Radio Dual Band Portable Two Way Radio Long Range Rechargeable Handheld Radio: amzn.to/3TtvhgX
Appreciate the video. What distance do you get with this setup? Does the solar charger work good to keep the batteries charged? I would like to do this build for GMRS. Thanks! WSAT505.
The distance depends on several factors. The primary factor being how high is the antenna. Additional factors include density of obstacles around it such as trees and buildings. This repeater setup could also be done with GMRS handheld radios. But you have to make sure that you are on one the designated repeater frequencies and not a simplex frequency that is required to use low power.
I read elsewhere that the antennas need to be 15' apart. What kind of success have you had with your antennas oriented the way they are?
Antennas for UHF/VHF must be in a vertical orientation. The more separation the better performance.
please try to use power supply if working good thank you sir
Thank you for watching.
power supply? not sure how long 3600mAH batteries will last for on standby, but pre going the whole 9 yards with solar, would battery eliminators connected to a small motorcycle battery be worth doing for a mid term repeater solution?? ""BL-5 Battery Eliminator Replacement for Baofeng UV-5* - pretty sure these have a built in regulator (they're designed to be plugged into car lighter socket) 2 for $20 on Amazon
How long they last would of course be directly related to how much traffic is on the repeater.
IS THIS DESIGN WITHOUT A DUPLEXER?
Yes. It is without a duplexer. You could use a duplexer if you want a different build that I have on my list. There are a number of mobile radios that have a cross band repeater built into them.
Is thier a reason ur doing a neg shift & only.600offset for a reason since normally it's + and 05.000 or is setting the direction and offset doesn't matter as long as it's the same on the all radio s
Transmit is offset Receive by 600KHz. Given this specific setup I had to configure it this way to function. I could have used a duplexer but then it wouldn't have been VHF only or UHF only. It would have used VHF and UHF in order to function. Hopefully that answer helps.
Would you be able to upload a link to your spreadsheet?
I will get a link posted later today to a PDF.
Great job sir
Thank you.
U have a Pic of ur setup the video was blurry
at 22:39 in the video there is a very clear picture of the inside of the setup. You can also check the playback settings of the video and make sure that it is set to at least 720P if not 1080P.
without filter, simplex much better...
Thank you for your comments.