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They have not been very helpful. The did point me to firestik.com for the MURS-base antenna. Otherwise, I find they are very impressively-unknowledgeable about the stuff they are selling. When I tell him it's only 400yards LOS with 6ft tall grass and the IR-transmitter can't reach the...

I bet you don't have 30ft mounds of dirt in between.

I must have misinterpreted AudioShockWave's post #8 here: https://www.worldwidedx.com/threads/can-you-really-just-connect-any-two-radios-with-an-audio-cable-like-this-and-form-a-repeater-i-e-just-connect-them-with-an-audio-cable.264962/#post-799141 "I don't know what version uv5r you have ...

The only thing I have not yet tried with the equipment I have right now, since I only just got the amplifier partly running two days ago, is to run the amplifier with the MURS-base antenna at point A. I am not optimistic. I don't think you can penetrate 30ft of dirt just by using an...

On top of all of the above, I have tried putting a tall pole on the top of my vehicle at G, a total of 11.5ft off the ground atop of which I placed the receiver radio. Still a fail in getting from A to G (that's with or without the MURS-base antenna at A). The pole was a hollow metal...

Please see post #5 for the distances.

There are absolutely no trees. There is a tall silo in the upper left of the picture I posted in the post above. But I am not really supposed to be climbing up on it. Also, even though it is tall, it is still not tall enough to get line-of-sight to location G.

Here is the type of geometry/distances I am talking about: A is the alert location. I am located at G. The blue lines are 20-30ft tall mounds of dirt. The mounds of dirt are up to 30ft thick. The distance between A and G is 325yards. I have tried the MURS-base antenna at A and it could not get...

I know I have asked this before. But, now I have more details. I have an alert signal (motion-alert from dakotaalert.com, with about a 5second-long alert message) automatically going into a Baofeng uv-R5 (call this radio #1). I have a maze of very tall obstacles that I must communicate...

I got them one of them from amazon and one directly from dakotaalert.com. I am presently using the latter one.

That was just inside my house, not past all the dirt-mounds.

Where can I get radios that will TX (and receive) at any frequency. For example, 162, 172, 182, 192, 202 mhz? So, I am basically looking for the analogous of a Baofeng uv-5R but that will TX at a set of five frequencies in about 10mhz intervals. I know people have them, but I don't know...

If I change the uv-5R receiving-radio frequency to 151.82mhz instead of 145mhz, the voice message is clearer. That's weird; I did not think uv-5R could do ANYTHING at 151.82 as that is not even in its range... And, the other weird thing is that the transmitting uv-5R, still at 145mhz, is not...

Ok. If I plug the above UV-5R Baofeng into the Btech amp, then I actually do get some signal in my house (one room to another), through the MURS-base antenna and received at another UV-5R dialed to the same frequency (145mhz) in this case. What power-meter and SWR-meter do you guys recommend...

I have tried two different DakotaAlert receivers, same model, 538-handheld. I don't know if a Baofeng can receive 151.82mhz. However, using the below cable, and a UV-5R set on VOX-10, I can "transmit" to a uv-5r radio and send it back out at a frequency of my choosing [within 144-148 or...

This link seems to suggest a standard TRS cable is not wired correctly. Maybe that is the problem? https://survivalcomms.wordpress.com/2016/05/22/setting-up-2-radios-as-a-repeater/

Even with the VOX turned off on the repeater-TX, as soon as I connect that 3.5mm into the mic-hole, boom, solid-red on that radio.

Any thoughts on what the cable-problem might be. My cables are TRS (3pole) on both ends, 2.5mm into the 'speaker' of the repeater-RX and 3.5mm into the "mic" of the repeater-TX. My cable has only one prong/jack on each end, like this:

I am thinking it is some sort of cable issue, because if I use no offsets at all on the repeater radios and simply put them side by side, I do get a repeating effect..... I don't know if it will diminish over distance that way.... versus a straight-cable. In fact, regardless of what settings...

Well, I followed the steps below (verbatim as best I can tell), except I had to use "144" instead of "155" since amazon says my ranges are 144-148mhz and 420-520mhz. This is what happened: The repeater-TX kept saying "transmit overtime" over and over and over again, when I was not even...