[R-390] RF Module Adjustable Slug Seperated from Adjusting Screw

[nryan at mchsi.com]

Hi, Paul,

You're better off gluing the spring shaft into the adjuster screw rather than soldering it.  If you do, heat may damage the slug.

For dimension control, try pushing the spring all the way in and see how it compares with its neighbors.  If all seems well, then go ahead and glue it in.

For glue, I think I would use an epoxy such as JB Weld.

Hoping this helps,
Norman KG4SWM


----- Original Message -----
From: Paul Dulaff <pdulaff at embarqmail.com>
To: r-390 at mailman.qth.net
Sent: Tue, 17 May 2011 01:03:01 -0500 (CDT)
Subject: [R-390] RF Module Adjustable Slug Seperated from Adjusting Screw

I have an R390 which I got working over the weekend. On the 16-32 Mhz slug rack, the front most slug has mechanically seperated from the adjuster screw. I took the slug and adjuster screw out of the set. It appears that the small spring shaft between the slug and the adjuster screw was soldered to the inside of the adjuster screw. Do I just push the small spring shaft into the bored hole in the adjuster screw as far as it will go and solder then back together ? Is there a dimension I need to control to as far as placement of the small shaft spring in the adjuster screw ?

Regards

Paul - WB2NMI
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