Communications Support Forums
I have seen some Astro Spectras connected to Kantronics KPC-3's on eBay via their rear connector, so I thought why not try it on an XTL5000 W4? I would like to use this for Winlink 2000 email.
Here is what I have:
XTL5000 W4 VHF - M20KSS9PW1AN - FLASHcode: 100001-000000-7
CPS Version: R20.01.00
Codeplug:
DSP: R19.50.01
Firmware: R20.50.05
UCM: None
Tuning: R01.00.04
PSDT: R04.00.00
Bootloader: R07.00.00
Kantronics KPC-3+ - Version 9.1 - 512K
Connections are as follows (pin numbers in parenthesis):
KPC-3+- - - - - - - - - - - - - - - - - - - - - - - - XTL5000
TX Audio (1) - - - - - - - - - - - - - - - - - - - - AUX Mic (23)
PTT (3) - - - - - - - - - - - - - - - - - - - - AUX PTT (16)
RX Audio (5) - - Audio Isolation Xfmr - - SPKR + (20)
Ground (6) - - Audio Isolation Xfmr - - SPKR - (26)
Power In (7) - - - - - - - - - - - - - - - - - - - SW B+ (24)
Ground (9) - - - - - - - - - - - - - - - - - - - Ground (1)
The radio / TNC receives and decodes packets just fine.
The problem is that even though the TNC keys up the radio via AUX PTT and the radio transmits the packet audio, nothing ever decodes it on the other end. I have experimented with both 80mv and 300mv settings in the AUX Transmit Sensitivity on the XTL5000, and have tried different settings of TXDELAY and XMITLVL in the TNC.
The packets that are being transmitted sound just like the other packets on the air to my ear. They are the same volume and duration. Unfortunately I don't have a scope or deviation meter.
Is there something within the XTL5000 that is filtering the transmitted audio which is making my packets undecodable? I'm ready to give up on this project! :wtf:
Here is what I have:
XTL5000 W4 VHF - M20KSS9PW1AN - FLASHcode: 100001-000000-7
CPS Version: R20.01.00
Codeplug:
DSP: R19.50.01
Firmware: R20.50.05
UCM: None
Tuning: R01.00.04
PSDT: R04.00.00
Bootloader: R07.00.00
Kantronics KPC-3+ - Version 9.1 - 512K
Connections are as follows (pin numbers in parenthesis):
KPC-3+- - - - - - - - - - - - - - - - - - - - - - - - XTL5000
TX Audio (1) - - - - - - - - - - - - - - - - - - - - AUX Mic (23)
PTT (3) - - - - - - - - - - - - - - - - - - - - AUX PTT (16)
RX Audio (5) - - Audio Isolation Xfmr - - SPKR + (20)
Ground (6) - - Audio Isolation Xfmr - - SPKR - (26)
Power In (7) - - - - - - - - - - - - - - - - - - - SW B+ (24)
Ground (9) - - - - - - - - - - - - - - - - - - - Ground (1)
The radio / TNC receives and decodes packets just fine.
The problem is that even though the TNC keys up the radio via AUX PTT and the radio transmits the packet audio, nothing ever decodes it on the other end. I have experimented with both 80mv and 300mv settings in the AUX Transmit Sensitivity on the XTL5000, and have tried different settings of TXDELAY and XMITLVL in the TNC.
The packets that are being transmitted sound just like the other packets on the air to my ear. They are the same volume and duration. Unfortunately I don't have a scope or deviation meter.
Is there something within the XTL5000 that is filtering the transmitted audio which is making my packets undecodable? I'm ready to give up on this project! :wtf: