It seems the big knob uses a smaller allen wrench than the smaller knobs.
The dial skirt can be tricky to reinstall on the shaft. I make a loop of
dental floss and use it to take the tension off the D-spring, it's easily
removed after the skirt is in place.
The dial cords remain good for a lifetime but what they call a bungee
section of the dial cord loses its elasticity in time, 10 to 15 years in my
experience. It is not necessary to restring the whole card, just to replace
that cord, connecting to the string with a small metal clip. Somebody on
this reflector bought springs to replace that bungee section but I surely
don't recall who.
Some rigs of that genre have a grain-of-wheat lamp mounted inside the
escutcheon on the front panel. It illuminates the pointer in my 544 and
Omni-C and is a real bother to replace. To extend its life, I put a 64 ohm
resistor in series with that lamp, and also put 27 ohm resistors in series
with all other lamps.
73, Mike N4NT
----- Original Message -----
From: "Bill Ames" <billa@aob.com>
To: "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>
Sent: Tuesday, April 22, 2008 10:54 AM
Subject: Re: [TenTec] Argonaut 509
>I hope I have the right size. I wonder what we did for projects like this
> before digital cameras. I hope the dial string is still good. I do not
> seem
> to have any problems moving the main knob and the dial moves with it.
>
> Bill
>
> KB1LG
>
> -----Original Message-----
> From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
> On Behalf Of Clark Savage Turner
> Sent: Tuesday, April 22, 2008 10:43 AM
> To: Discussion of Ten-Tec Equipment
> Subject: Re: [TenTec] Argonaut 509
>
> Its a small allen wrench, as I recall, to loosen the knobs. If you
> have a bunch, just stick them in there and you'll find the right size.
> The dialstring can be a bit interesting, I'd take a nice clear photo of
> it before disassembly after you pull the face. Its not hard but takes
> time and care to get just right.
>
> Clark
> WA3JPG
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