TRC konfig
Posted: Mon Jul 19, 2021 3:15 am
Hi guys
I was wondering if anyone ever ran an Astro Spectra via TRC in a non-consolette konfig? I’m trying to figure out how it would work via a L1548A TRC adapter. I’m using a Command Plus console which runs via 600ohm to the adapter (RJ11 2 or 4 wire) and further on via the P2 (16-pin) to the radio which in this case is a W3 astro Spectra. The astro Spectra has the TRC ensbled in the CPS and hub defeats pl enabled. Upon self check it comes up with fail 1C/10 which I believe is a TRC problem. The adapter connects via J6 and in the CPS external ptt has been enabled via VIP1. Meanwhile there is no RX audio passed on to the console. The console has be konfig in rss as TRC on CH 3 and pin 8 and 9 is being used on the DB25 on the relevant ACC. Also the jumper setting for CH 3 is correct inside the console (2-wire). The High-level has be kept standard (default). When pressing ptt on the console the tone commands are being heard and the PTT Led lights up on the adapter but the radio dosn’t key. According to the TRC adapter manual pin 2 and 3 are being used for TX audio on J1 (RJ11). I’m not really into old phone lines but inside the adapter the outer pins 1 and 6 are N/C so leaves me with 4 pins. When reading that pin 2 and 3 were TX audio I counted from pin 1 which is N/C internally. That may be first mistake? Google learned me that when looking at 4 pins the two in the middle pin 2 and 3 would be the phone line pins?!? I need to understand how this works and how the 2-wire konfig is being controlled for both TX and RX. My first thought was that the Guard tone was being used to direct the signals on the 2-wire? BTW the console also lights up the MON Led when pressed.
On the adapter SWA 2 and 7 is up. If 7 is down the Leds don’t light up on the adapter if PTT or MON is being pressed.
The present konfig between the adapter and radio looks like this:
Adapter————————Astro Spectra J6
1 RX audio - —————18 Dig GND / Mic Lo
3 RX audio + —————6 Fil audio
6 PTT —————————1 PTT
7 Mic Hi ———————-12 Mic Hi
9 Mic Lo ———————-18 Dig GND / Mic Lo
12 GND————————-18 Dig GND / Mic Lo
13 DC + ————————22 SWB+
14 GND————————-18 Dig GND / Mic Lo
15 DC + ————————22 SWB+
16 GND————————-18 Dig GND / Mic Lo
Any ideas what could be wrong?
I was wondering if anyone ever ran an Astro Spectra via TRC in a non-consolette konfig? I’m trying to figure out how it would work via a L1548A TRC adapter. I’m using a Command Plus console which runs via 600ohm to the adapter (RJ11 2 or 4 wire) and further on via the P2 (16-pin) to the radio which in this case is a W3 astro Spectra. The astro Spectra has the TRC ensbled in the CPS and hub defeats pl enabled. Upon self check it comes up with fail 1C/10 which I believe is a TRC problem. The adapter connects via J6 and in the CPS external ptt has been enabled via VIP1. Meanwhile there is no RX audio passed on to the console. The console has be konfig in rss as TRC on CH 3 and pin 8 and 9 is being used on the DB25 on the relevant ACC. Also the jumper setting for CH 3 is correct inside the console (2-wire). The High-level has be kept standard (default). When pressing ptt on the console the tone commands are being heard and the PTT Led lights up on the adapter but the radio dosn’t key. According to the TRC adapter manual pin 2 and 3 are being used for TX audio on J1 (RJ11). I’m not really into old phone lines but inside the adapter the outer pins 1 and 6 are N/C so leaves me with 4 pins. When reading that pin 2 and 3 were TX audio I counted from pin 1 which is N/C internally. That may be first mistake? Google learned me that when looking at 4 pins the two in the middle pin 2 and 3 would be the phone line pins?!? I need to understand how this works and how the 2-wire konfig is being controlled for both TX and RX. My first thought was that the Guard tone was being used to direct the signals on the 2-wire? BTW the console also lights up the MON Led when pressed.
On the adapter SWA 2 and 7 is up. If 7 is down the Leds don’t light up on the adapter if PTT or MON is being pressed.
The present konfig between the adapter and radio looks like this:
Adapter————————Astro Spectra J6
1 RX audio - —————18 Dig GND / Mic Lo
3 RX audio + —————6 Fil audio
6 PTT —————————1 PTT
7 Mic Hi ———————-12 Mic Hi
9 Mic Lo ———————-18 Dig GND / Mic Lo
12 GND————————-18 Dig GND / Mic Lo
13 DC + ————————22 SWB+
14 GND————————-18 Dig GND / Mic Lo
15 DC + ————————22 SWB+
16 GND————————-18 Dig GND / Mic Lo
Any ideas what could be wrong?