Messages

1

General discussion forum / Re: Kenwood TS-480 PTT self-triggers

« on: 2025-03-31, 06:53:27 »

Hej Micke

Tack för tipset! Men nej, "USB as PTT" (och även "USB as CW") är "disabled".

Jag satte en "loggare" på USB porten och jag kan se att det sker en handskakning mellan PC och RRC-control en gång var 38:e sekund, handskakningen ser ut att initieras utifrån, dvs från RRC-sidan. Det verkar vara efter den 3:e handskakningen (3 x 28s = 1 min 56 s) som PTT går aktiv.

Jag hittade ett annat inlägg som beskriver ett liknande problem med just TS-480, jag skall se om jag får tag i honom...
https://www.remoterig.com/forum/index.php?topic=6522.0

73

/Mats, SM3LGO

2

General discussion forum / Kenwood TS-480 PTT self-triggers

« on: 2025-03-30, 14:37:25 »

Hello

I have a Remoterig setup with a Kenwood TS-480, and eveything works prefectly except that PTT is activated after about 2 minutes, no matter what I do.

I am controling the TS-480 via USB-to-RRC1258 on the control side and COM2-to-TS480 on the radio side (COM2 setup as per the manual).

When I connect the USB cable between the RRC1258 control unit and the PC, the TS-480 will always go into TX after about 2 minutes. It does not matter if I have any software running on the PC, it seems to be inserting the USB connector that is the source of the PTT trigger (but "delayed" by 2 minutes). Before the PTT triggers, i.e. during the first 2 minutes, CAT control and PTT via WSJT-X works perfectly.

Also, it does not matter if I on the radio side pull out the cables for MIC, COM2 and CW keying, the PTT is still always triggered after 2 minutes. So the only explanation is that something via the TTL/panel connector triggers the PTT at the radio side.

Any suggestions?

73 + TNX in advance

/Mats, SM3LGO