[AMRadio] Globe Champ 350

[Greg Mijal]

In my own experience, running up the rig slowly with the original 
electrolytics may bring the old girl back to life but doesn't mean she's 
ready to leave the hospital.  Transmitters have a funny habit of coming back 
then blowing an old electrolytic, days or weeks later.  I think it's the 
changing current load requirement as the rig is tuned then operated. 
Receivers are better due to the nearly constant load.  For a heavy weight 
transmitter my habit is to recap the entire radio and clear out all the 
obvious trouble spots then burn the rig in for a week.  Burn in means keep 
the radio on and nearby and make an occassional transmission into a dummy 
load for 1-2 minutes.  The burn in really helps you spot what's left to do 
and will delivery a more trouble free machine for you.
----- Original Message ----- 
From: "Kim Elmore" <cw_de_n5op at sbcglobal.net>
To: <amradio at mailman.qth.net>
Sent: Saturday, September 25, 2010 2:10 PM
Subject: [AMRadio] Globe Champ 350


> Well, I have finally had some time to check out the Globe Champ 350
> that I got from my Dad (W5JHJ - SK). I used a variac and brought up
> the voltage slowly during the morning to be nice to the
> electrolytics. I finally had it up to 120 VAC and decided to try a
> tune-up. Everything seems to work! Switches are dirty, but a bit of
> contact cleaner carefully applied should help that.
>
> I had to do the tune up all by memory. At one time, I know that my
> Dad had the original manual for it, along with the original sales
> slip. In that manual, he had noted what mods he had made.
> Unfortunately that has somehow disappeared, so I'll need to get
> another copy of the manual.
>
> I'm now doing the same with his Hammarlund HQ-170 receiver, to get it
> back up to snuff. I'll need to get a manual for that, too, as all of
> his manuals were missing. I don't have the rigs in my shack, yet. I
> also need to set up a 4 position coax switch "backwards" so that I
> can use all my rigs with the same antennas without playing with coax
> connectors.
>
> I have a very small bit of work to do with the Champ: Dad had mounted
> a small Dayton blower on the side to help control heat. It was
> plugged into a switched 120 VAC outlet on the back of the rig. That
> socket was broken during the move, so I need to fix that. I may need
> nothing more than some epoxy, but I'll have to look carefully.
>
> I'd like to set it up with the HQ-170, but may need to rearrange some
> equipment to fit it all in. I really wish I had all of Dad's
> documentation, but I at least have the rig. I hope that in the near
> future, I can play a bit of AM with the rest of you!
>
> 73,
>
> Kim Elmore, N5OP
>
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