[ARC5] AN/ARC-2A Meter Fixed.

[Peter Gottlieb]

Very nice.


On 5/6/2018 6:47 PM, jeepp wrote:
> Dave,
> Mine was doing somilar thing, but it didn't come back on its own.  I had to 
> key the mic, just once, and it would pop back on.  Thankfully,  all the relay 
> contacts are in the clear and within reach of the burnishing tool.
> Jeep K3HVG
>
>
>
> Sent from my Verizon 4G LTE smartphone
>
>
> -------- Original message --------
> From: David Stinson <arc5 at ix.netcom.com>
> Date: 5/6/18 17:32 (GMT-05:00)
> To: ARC-5 <arc5 at mailman.qth.net>, milsurplus at mailman.qth.net
> Subject: [ARC5] AN/ARC-2A Meter Fixed.
>
> Here's the ARC-2A I'm hoping to offer sometime
> soon.  I get 15 minutes here and there to work on
> it, so one of these days, I guess.  Sorry for the
> lousy pic, but when the list is limited to 30K
> photos, low-rez is about it.  I got the meter
> fixed.  The problem was the front spiral "clock
> spring" was, for some reason, up against the
> forward movement mounting frame.  I just blew on
> the movement and the spring snapped back in the
> proper place.  Lubed it, cleaned the case (careful
> not to put pressure on the glass or it will come
> out).  Seems to be OK now.
>
> Got a problem I'm hoping someone has seen:  When I
> key the set in AM mode, then release the PTT, the
> receive level is low, like it was not muted and
> the TX signal has railed the AVC voltage.  It
> starts to come back up, but after a couple of
> seconds, it pops back to normal, for all the world
> like a sticking TR relay letting go.
>
> There's also a leak of low B+ somewhere, indicated
> by static noises.  That may be moisture related.
> Going to pull the dynamotor (must be out of my
> mind!) and leave it with the filaments running for
> a couple of days to dry out any moisture.  Then
> use an external low B+ source to determine if the
> leak is in the dynamotor (happens) or in the set.
> A single, leaky cap can do it.  We'll see.
>
> Here's a video of it receiving WWCR on 4840:
> https://photos.app.goo.gl/Yiz7yARb0VbBEVCe2
>
> Hope I'll get to work on it again soon.  We'll
> see.
>
> 73 Dave S.
>
>
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