[TenTec] 9 MHz tap on EAGLE... and then.....

[Rick - DJ0IP / NJ0IP]

In this case, Dave = Pete

(had two emails open at once and grabbed the wrong name)

73 - Rick, DJ0IP
(Nr. Frankfurt am Main)


-----Original Message-----
From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Rick -
DJ0IP / NJ0IP
Sent: Monday, December 29, 2014 12:28 PM
To: 'Discussion of Ten-Tec Equipment'
Subject: Re: [TenTec] 9 MHz tap on EAGLE... and then.....

Dave,

We have been discussing both ways of connecting an SDR.

The trouble is, the very first production run of Eagles did not have the TMP
jack with the 9 MHz tap on the Filter Board. However there was a mod to be
used in conjunction with an external pre-selector, noise cancellor, or even
as an antenna out for a 2nd RX.  So the second proposed solution involves
using this jack.

If you are willing to solder onto the boards, I guess you can tap in
anyplace you like.
It seems nobody is able to identify just exactly where the newer Eagle taps
into the 9 MHz line.
The schematics currently posted on the web site do not show this.

73 - Rick, DJ0IP
(Nr. Frankfurt am Main)


-----Original Message-----
From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Peter
Bertini
Sent: Monday, December 29, 2014 5:35 AM
To: tentec at contesting.com
Subject: Re: [TenTec] 9 MHz tap on EAGLE... and then.....

Well, I must be out to lunch, but this is topic asking about a 9 MHz tap on
an Eagle.

If the topic is about adding a full SDR receiver, capable of providing CW
skimmer operations over several band segments, I don't understand why the
topic specifies a 9-MHz tap.  That would require a good quality splitter,
after the T/R switch, on the 50 ohm input feeding the receiver section.
You'd also have to put up with perhaps 4 dB of loss, which might affect the
noise floor on 10 meters.

I'll be using a tap after the first mixer on my Omni VI, to provide a 9 MHz
tap via a Clifton Labs buffer amplifier. That will drive a LP-Pan with  a
192 kHz soundcard, which will provide full coverage on most of the HF bands
for either CW or SSB.  The LP-Pan adapter is a fixed frequency SDR receiver
in its own right.

Pete
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