[TenTec] Intermittent loss of sensitivity on Orion 566 upon PTT switching

[k8mp at aol.com]

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In Star Trek they call this a "Temporal
Causality Loop."
Or is it just deja vu all over again?


Sent from AOL Mobile Mail


-----Original Message-----
From: md.schatzberg <md.schatzberg at gmail.com>
To: tentec <tentec at contesting.com>
Sent: Fri, May 20, 2016 05:42 PM
Subject: [TenTec] Intermittent loss of sensitivity on Orion 566 upon PTT switching


Hello Ten Tec Fans

My normally reliable O2, sometimes returns from transmit to receive with a lower sensitivity.  Switching back to transmit, and again to receive, the normal sensitivity returns.

It appears as if I have a dirty contact on a relay, and have to exercise it for better contact.

Looking at the schematics, I see there is a reed relay, K6, which appears to perhaps be the most likely candidate to be at fault.  This relay is on the A1 board, the low pass filter board.

Before I take everything apart, and start looking (there are no pictorials for component placement information), has anyone had a similar problem with their O2?  Any information as to board location, and degree of difficulty in removing this relay, if indeed it was your issue, would be appreciated.

I guess since this radio is circa 2006, and I use QSK switching, and always use VOX, I can’t be too surprised that this high speed relay might need replacement by now.

Thank you for any possible input.

73,

Mike
W2AJI
Sent from my iPhone
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