[Elecraft] [KX3] HRD/DM80 and a SignaLink

[Jack Spitznagel]

Good Weekend All,

Don't have easy access to search the archives, so at risk of a dup, here 
is a "finding" from setting up the KX3, SignaLink with the KX3 
Tigertronics made cables, and DM780. HRD works flawlessly with Elecraft 
KXUSB here, but...

Using the little paper instruction insert that came with the SL to KX3 
cables from Tigertronics, it was implied that the KX3 menu entry for 
MicBtn was to be in PTT Up.Dn. Well, that is apparently backwards. The 
system behaves normally if Mic Btn is OFF, and when set as instructed in 
the little sheet, the outgoing data string is transmitted in your 
selected mode, then the SL unkeys (as it should), but the KX3 stays in 
transmit.

When the KX3 is set as the TigerTronic folks suggest, I assume the SL 
vox relay was being "overruled" by the TX command by KXUSB control 
because tapping the XMIT button on the rig would drop the rig back into 
receive. With PTT set OFF, the SignaLink VOX circuit has proper control.

Had me stumped for a minute.. hope this helps someone setting up in the 
future.

Jack - KD4IZ

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