On Thu, 28 Oct 1999, Alessandro Ren wrote:
> I have bought two used DM-530 maxon data radios, similar to
> the KS-1000 radios, to make 9k6 packet. The radio has a DB9,
> where you connect power, TX, Rx, in and out audio, but I dont
> know which pin is what.
> I have searched the internet without any effort. Does anyone
> know where I cound find such information or does anyone maybe
> have this information?
I've used Maxon radios for a job, but I can't remember the model.
The ones I had were UHF, single channel,
in a tin box about the size of a deck of cards.
Connections on the DE-9:
1 - tx audio
2 - rx audio
3 - PTT (open collector, pull low to transmit)
4 - earth
5 - power (+11V max)
6 - carrier detect (active low, IIRC)
7 - RSSI (which I think may have been a local addition)
8 - unused
9 - unused
Levels of the audio signals for my job were changed for some strange reason,
so I don't know what they were meant to be. Sorry.
Kevin
