[TenTec] 160 Meter Problem

[Bob McGraw - K4TAX]

Probably an issue with the LowPass Filter board for 160M related to K12 and 
or K13 that switch the components for 160M filter.  Likely one or both relay 
coils are open.  Since they are actually parallel.  It is easier to replace 
them than pull both out just to check them.

73
Bob, K4TAX


----- Original Message ----- 
From: "Jim Allen" <jim.allen at longhornband.net>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Monday, August 18, 2014 9:11 AM
Subject: [TenTec] 160 Meter Problem


>I was sitting in the shack minding my own business last night when I
> noticed on the DX cluster that W1AW/5 was on 1821.5 in Oklahoma.  I have
> not tried 160M here, but do have a 130' dipole and an AH-4 to match it
> with, which might work, so I thought, "what the hey?"
>
> I got it all set up and could hear W1AW/5 extraordinarily well.  I moved 
> up
> the band a bit to tune and ........ nothing.  No output whatsoever.  I
> checked... traced the coax, antenna connected to wattmeter, wattmeter
> connected to Omni VI+, AH-4 tune control getting power, etc.  All seemed 
> to
> be in order.  I tried again... nothing.  The radio went into tune no 
> output
> no tone, nothing.  I switched to 80M, found a clear spot, tuned normally.
> I went back to 160M, nothing.  I advanced the power knob from nothing to 
> as
> high as I dared... still nothing.
>
> I then moved to the 706MKIIG, got it going on 160 and made the contact, no
> problem, although I did have to use 100 watts instead of 5.
>
> This is the first time I have tried this Omni VI+ on 160M, but it seems to
> be working just fine on the other bands, very well, actually.
>
> What could this be?  Where should I start?
>
> 73 de W6OGC  Jim Allen
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