"Al Parker" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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Hi Karl,
It sounds to me like you have moved the oscillator frequency in the
wrong direction and gotten it outside one of the filter's freq. It should
be between the 2 filters. Didn't you add some capacitance to the freq.
trimmer a while ago? Maybe you needed less cap, but zero cap probably
wouldn't have moved it enough in the proper direction, so could be the
xtal's gone south a bit.
I've been there once or twice.
73,
Al, W8UT
New Bern, NC
BoatAnchors appreciated here
http://www.thecompendium.net/radio/
http://www.hammarlund.info
----- Original Message -----
From: "Karl Corder" <[EMAIL PROTECTED]>
To: "drakelist" <[email protected]>
Sent: Monday, December 19, 2005 11:15 PM
Subject: [drakelist] Tr-4 problem again
I have tried adjusting the balanced modulator and the carrier (c130)and
neither
one will allow the sideband switch in the X position to give me any drive
at all
beyond the .1 miliamps. With the sideband switch in the NON X position
I can get drive and adjust the resting drive current to the .15 as they
recommend.
I cannot get equal noise pitch using the C130.
As long as the sideband
switch is in the NON X position and the other switch is in the X-CW
position
I can get drive but as soon as I put the ssb switch in the X position
there
isn't any drive from the rf gain control.
Does this mean that one or both of the ssb filters have croaked? I
can hear (make out signals in the lower sideband but they are
poor and hard to tune in the audio isn't good at all, it is bassy
and the usb mode is Hissy( can't change it to bassy or bassy to hissy).
Appreciate any recommendations? Karl Corder wa20vj
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