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

[Bill Stewart]

Rob, 
In my case the vfo is switched on and off thru it's key
line by a relay in the 2-NT. Grid block keying is used
to turn the driver on and off with keying. The applied
cut-off voltage should be around -125vdc. I'm in the
process of making some voltage checks so maybe that will
show up something.
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 9:16:35 PM
Subject: Re: [Boatanchors] Drake 2-NT & Knight V-44 VFO

Bill, I've had backwave years ago but I don't remember what I did
about it.  I think it is not difficult to remedy but I'd have to
consult a handbook.  You must have the driver free running and are
only keying the final?  Maybe the VFO or some intermediate stage is
driving harder than it needs to be?  If it can be heard by skywave it
is too strong alright.

Rob
K5UJ

On Mon, Jul 25, 2016 at 12:30 PM, Bill Stewart <cwopr at embarqmail.com> wrote:
> 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
>