[TenTec] 160 Meter Problem

[Mike Bryce]

As far as I know, no ten tec PA folds back at high swr.  

They rely entirely on over current protection and shut  down. 

Even with a LP filter board relay failure  the PA should draw lots of current. Perhaps enough to trip the protection circuit. 


Mike wb8vge
Sent from my iPhone

> On Aug 18, 2014, at 2:28 PM, Jim Brown <k9yc at audiosystemsgroup.com> wrote:
> 
>> On Mon,8/18/2014 11:14 AM, Jim Allen wrote:
>> I removed the covers top and bottom but find no 81595 mixer board.  I did
>> find what appears to be connector 82 on the logic board and did "remove and
>> plug [it] back in" with great trepidation.
> 
> Why trepidation?  It's common for connector contacts to oxidize or become loose over the years. Disconnecting and reconnecting one or more times simply scrapes a bit of the oxidation off. Just be careful to remove and re-connect them without bending contacts, and lined up correctly (not one row off, for example).  And do this for ALL the connectors.
> 
> Another thing I would try is to back off the power a lot (5-10W) and see if you get anything out. If the SWR is very high at the rig, the TX may go into protect mode, especially at full power.
> 
>