[TenTec] TenTec Digest, Vol 175, Issue 19

Katz Ajamas ajamas.rn at gmail.com
Thu Jul 20 06:28:53 EDT 2017

Aloha Mike!

You might consider an outboard audio notch filter.
Radio shack used to sell one that turns up at hamfests for about $30.
There are others but I am not familiar with them.

Another option is adding a softrock 9MHz SDR and using outboard signal
HDSDR is free and does a great job.

With the 300Hz filter in my Eagle, careful adjustment of passband and RF
works very well with weak signals.

20W on tune. If you have an ammeter in your power supply you can see the
Eagle draws a
lot less current in tune mode. As with most autouners, it hot switches the
LC relays when tuning.
Reduced power keeps them within their rating.

73, -Bob ah7i/w4

> ---------------------------------------------------------------------
> Message: 1
> Date: Wed, 19 Jul 2017 15:05:59 -0400
> From: "Michael Tortorella" <w2iy at verizon.net>
> To: <tentec at contesting.com>
> Subject: [TenTec] notch filter for Eagle?
> Message-ID: <DD90429A93FB46769237FE7EB03A7912 at ToshibaLaptop>
> Content-Type: text/plain;       charset="us-ascii"
> Hi all, I am hearing an awful lot of steady carrier signals up here in the
> frozen north of Downeast Maine.   Most are not very strong and they go away
> when I disconnect the antenna so they are external to the radio.  Today I
> am
> chasing TR8CA on 20 CW, he is way down in the noise, and 100 Hz away from
> one of these carriers.  Sure would be nice to have something like a notch
> filter to help in situations like these but I could not see anywhere in the
> manual or front panel where I could notch the offending carrier.  Is there
> any list wisdom on this?
> On another note, I did contact service at TT last week with my question
> about power out in autotune; after only a few days delay I got an answer
> that the power out in autotune is 20 watts even though the power output
> shown on the display is 100.  This seems not quite right from a human
> factors point of view, maybe there can be a firmware fix?  Also, when
> exchanging VFOs, the A,B labels do not change even when the B vfo is in
> large type at the top of the display.  I find this confusing.  OK, I guess
> this turned into a longer letter about a couple of other things besides
> notch filtering, so please excuse my prolixity and thank for the BW.  Any
> suggestions appreciated.
> Thanks and 73, Mike W2IY

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