[Kenwood] TS-870 amplfier interface

[Rob Atkinson]

what's your amp?

i have a centurion and I have had no trouble running an audio type 
cable from a couple of pins in a din plug for the 870 din jack to a rca 
plug into the back of the amp.   rig shorts the center to ground and 
keys the amp.  can't remember which pins they are but they are the same 
on the 850 and 870.  works for PTT but not QSK.  pins are clearly 
labeled in the kenwood manuals.

rob / k5uj

On Thursday, August 3, 2006, at 10:06 PM, Larry Clark wrote:

> Hi,
>
> On my previous 850's I have always used the "12v on transmit" 
> available at
> pin seven of the accessory plug to bias an external transistor to 
> switch the
> relay line of my amp.  This allows the rig's internal relay to be 
> switched
> off for silent keying.  I just acquired an 870 and attempted to 
> implement
> the same scheme.  I find when I switch off the amp relay (via menu 
> item 51
> in the 870) that I also lose the 12v on transmit at the accessory 
> connector.
> Is this normal?  If so, is there a work around?
>
> Thanks, Larry, K0RS
>
>
> ______________________________________________________________
> Kenwood mailing list
> Home: http://mailman.qth.net/mailman/listinfo/kenwood
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:Kenwood at mailman.qth.net
>