[Boatanchors] Drake 2-NT & Knight V-44 VFO

Bill Stewart cwopr at embarqmail.com
Mon Jul 25 13:30:30 EDT 2016


Rob, I got two 'swl' reports of the backwave....hi.
The bw sig was abt s4, cw sig s9. I would say that on all
my BA stns the 'vfo sig' is much weaker than the actual
cw signal so I use the local signal for cw monitoring.
But in this case, the backwave is so strong, I can't
hardly 'monitor' my cw. I'm gonna go back thru the 2-NT 
driver alignment and do it per the book rather than
just peak the driver coils for max output into the
dummy load. Don't see why that would make any diff.
Oh, the vfo feeds into the osc (6EA8), driver is a
12BY7, final a 6HF5.
 Tnx...73 de Bill K4JYS 

----- Original Message -----
From: "Rob Atkinson" <ranchorobbo at gmail.com>
To: "Bill Stewart" <cwopr at embarqmail.com>
Cc: "boatanchors" <boatanchors at mailman.qth.net>
Sent: Monday, July 25, 2016 12:45:29 PM
Subject: Re: [Boatanchors] Drake 2-NT & Knight V-44 VFO

I don't know a lot about the 2NT at all, so I guess I can't help much
there.  I am familiar with 6AG7 and 6146 or 807 novice rigs.

Hearing the VFO:  That may be a receiver muting problem more than
anything else.  When you go to transmit the receiver should be
isolated from its antenna feed.  You'll still hear the transmitter but
not the VFO.

HA-5:  They have really gotten expensive.  I found one in less than
mint condx that needed work but it was still over priced.

73

Rob
K5UJ


On Mon, Jul 25, 2016 at 8:55 AM, Bill Stewart <cwopr at embarqmail.com> wrote:
> Hi Rob,
> Right, they double from 1750kc or so. As far as the drive is
> concerned, I got a suggestion from Rodger, WQ9E, to go thru
> the 2-NT driver alignment, which I did and that improved the
> output. That problem solved. However, during my first QSO
> using the V-44 with the 2-NT, I received two rpts via email
> of a considerable back wave. The VFO sig was vy strong here
> on local rcvrs to the point I couldn't copy my CW over the
> VFO sig. Guess I will hve to figure out how to reduce the
> back wave. I have been looking for a HA-5, but prices, at
> least on eBay, are way more than I wanna pay. Got the V-44
> at a pretty good price plus hve several other V-44s in use
> and have had good luck with them (never any back wave pblms).
> It's back to xtals, with the 2-NT, 'till I get the back wave
> fixed. Thanks for your input....73 de Bill K4JYS
>


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