[TenTec] Paragon 585

Jim Allen jim.allen at longhornband.net
Fri Mar 6 10:05:28 EST 2015


That (relay failure) was given was the cause of the low 30M output and no 160M output on my Omni Vi+ this summer when I sent it in for repairs.  All 12 (I think) were replaced at that time.

73 de W6OGC Jim Allen

Sent from my iPad

> On Mar 6, 2015, at 8:52 AM, Lee WA3FIY <wa3fiy at radioadv.com> wrote:
> 
> Chuck mentioned on his web page that the Paragon only has 12 watts or so output so he 
> suspects drive or PA problems if I read that correctly.  Could well be one of those but there is 
> another possibility...bad relay on output low pass filter board.  If one or more relays weld 
> closed this symptom will be present on several but not necessarily all bands.  I've had that 
> happen twice over the last dozen years or so.  Once on a Pegasus and once on a Paragon.  
> So checking out the LP filter relays might be a good place to start.
> 
> For what it's worth, the failures were two different types.  The Pegasus simply had a wear out 
> failure.  The Pagagon failure was caused by a leaking 9 volt memory backup battery.  The 
> leakage contaminated a lowpass filter board on the bandswitching lines causing one or more 
> relays to be closed when they were not supposed to be.  Why would a relay weld you ask?  
> I'm thinking that being closed when it was not supposed to be caused high circulating 
> currents on the LP filter board welding one of the relay contacts.   Not sure about that but I 
> am sure the relay had stuck contacts and the radio acted like it had PA failure. A replacement 
> relay fixed the problem.   :-)
> 
> Good hunting!
> 
> -Lee-
> 
> WA3FIY
> 
> 
> 
>> On 4 Mar 2015 at 16:26, chuck adams wrote:
>> 
>> Thanks to all who have helped and are helping on the
>> Paragon 585 transceiver.
>> 
>> I have a manual on the way with the schematics.
>> 
>> I went to Home Depot and got a quart of Behr
>> Premium Plus Ultra Interior Semi-Gloss Enamel.
>> I took the cover in and they scanned it with their
>> magic wand to get the color.
> etc.
> 
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