Any ideas on this ?

[danieldad]

Just wondering if anyone has any ideas on the possibility of adapting an aor P25 module ( ie- like the ones for the 5000, & 8600) to a aor AR One. That p25 ard25 is a bit beyond my budget, and I'm told it isn't all its cracked up to be, by other folks who've used them.
Just putting it out there.

 

[danieldad]

Come on, radio world, ... help me out here. No thoughts on the idea from anyone ?
It's really more of a curiosity than a need; we're phase 2 here, & I'm doing the whole psr 800 thing, & use a efj 5100 for vhf p25/1 (feds), & waiting for that whistler 900/950 to hit the street, but am still interested in getting one of my aor rigs set up for single channel p25, and the aor ar one seems like it might be the best way to go (-it was in the bottom of a box in a lot I'd bought at a govt auction, covered up by some other things I was interested in ... pretty good, and very unexpected find; & not too shabby, for the $30 or so I paid for the 'other' stuff-& it works just fine, too!)
So, let's hear your thoughts, - someone's got to be able to throw in a (positive, hopefully) suggestion.

 

[kruser]

I don't know a lot about how AOR does this module but if the connecting receiver is controlling the P25 module, then it may be hard duplicating something to tune the P25 module. Things like displaying P25 info may not work unless it is talking to a radio with the smarts to make it work.

On the other hand, if the P25 module just taps into an IF stage and is turned on/off with some type of switch, I'd think it should work with about anything that uses the same IF frequency.

Are there any schematics of the AOR P25 module out there on the internet? That would probably be your starting point in determining if external support and control circuitry is needed.

 

[dkf435]

What ever radio you put the AR8600 P25 module in will require breaking into the audio path before the audio amp with a wide discriminator input to the board. The AR8600 P25 connects to a optional board header in the AR8600 radio similar to the AR5000 one before they had the card setup.

There are times the ARD25 will decode when the GRE and Uniden radios do not they are working ok here.

PS their was an AOR ARD25 on ebay like new in the box today. Have one on AR5000, R7100A, R8500A.


David Kb7uns

 

[danieldad]

Hi Dave, thank you for your information. ... Please excuse the delay in my response, - I'd honestly thought I'd posted it, but ???? -I am considering digging into the audio board, & have a service manual, so have put that on my list of things to do, - but am waiting for my brother to visit, to give me a hard ( some "vacation", huh!). Let you know what happens,
Thanks again, Dave R