From: "VE3AX" 
Subject: Re: [drakelist] TR7 drift


"VE3AX"  made an utterence to the drakelist gang
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Hi all:

While we're on the subject of TR7 VFO drift, has anyone tried out Conny,
DL1SDQ,s, PLL board for the TR7?  He put one on the Bay a while back but
sells directly as well.  I exchanged e-mails with him and have checked out
his web site, but before shelling out $C 150 for each board (incl. shipping)
, I'd love to talk to someone who has installed one first.  It appears to
tune in (at installation) selectable 2, 4 or 8 hz steps, and is tuned by the
existing PTO (???).  Takes 5 wires to install and mounts underneath the
motherboard.

I don't find the drift objectionable after the radio has been on for a while
and I have left the PTO dial lights in place. They just look too good with
the new blue filters!  I have found that by using the external RV-7 as the
main tuning control, drift is significantly less a problem.  Or you can use
the RV-75 if you are lucky enough to have one.  Incidentally, Conny tells me
that you can also install one of his boards in the RV-7.

Conny's web site is at http://www.conny-dl1sdq.de/1312.html

It is in German but you can figure out just about everything you need to
know without knowing the language.  The pictures tell a lot.  He has some
other neat ideas for the TR7 as well. I particularly like the 10 turn pots
for replacing the frequency control/voltage control pots on the power supply
board.  Far less likely to get "bumped" and easier to put right on
frequency/voltage.

73

Peter
VE3AX


----- Original Message -----
From: "doc" 
To: 
Sent: Thursday, July 01, 2004 11:38 PM
Subject: Re: [drakelist] TR7 misc.


>
> doc  made an utterence to the drakelist gang
> ----------------------------------------------------------------------
> Congratulations!  We owned one at the Seminary Club station years
> ago and despite the fish odor (it was donated by a guy who had
> it in his sailboat on an around-the-world trip) I fell in love
> with it.
>
> I have owned three of them over the years, financial challenges
> forcing me to sell the first two.  The latest is on a bench
> being readied for use!
>
> As for the lamps, were I contemplating a replacement I would
> only use LEDs ... a fraction of the heat (thus a fraction of the
> contribution to drift).
>
> 73, doc kd4e
>
> Don and Diana Cunningham wrote:
>
>  > Mike,
>  > I would NOT put in the lamp for the analog dial.  It will make drift
> of the vfo much worse, and I never look at it (except to enjoy that
> deeeeep Drake blue glow, hi hi) for frequency usage anyway.  I don't
> think I've ever replaced the bandswitch lamp, but will look at my parts
> rig and see what would be involved if no one else chimes in soon.  Good
> to see another "TR7 addict".  I'm hopeless.
>  > 73,
>  > Don, WB5HAK
>  >
>  >     ----- Original Message -----
>  >     *From:* Mike Williams 
>  >     *To:* drakelist{at}www.zerobeat.net

>  >     *Sent:* Thursday, July 01, 2004 6:56 PM
>  >     *Subject:* [drakelist] TR7 misc.
>  >
>  >     As a new TR7 owner, let me first  say that I have waited 25 years
to
>  >     own this radio and it is sweet.  Sitting next to my 4 C line and
>  >     residing above the inferior Icom below it.  OK I need to know if
the
>  >     PTO lamp should be illuminated on the analogue dial,  the rig has
>  >     the DR7 display,
>  >     and is there a lamp for the band switch?  The schematic I have
shows
>  >     DS1 and DS5 as the two lamps in question.  If so, how much of a
>  >     chore is it to change them?
>  >     Thanks,
>  >          Mike   AK7P
>
>
> ----------------------------------------------------------------------
> On Behalf of doc 
> Submissions:        drakelist{at}www.zerobeat.net
> Unsubscribe:        majordomo{at}www.zerobeat.net - unsubscribe drakelist in

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