[Hallicrafters] SX28 help

[Roy Morgan]

At 06:24 PM 11/19/03 -0400, guido wrote:
>Hi gang,
>... I still have some problems like a scratching noise in certain 
>positions of the antenna tuner cap. I have checked and see no plates touching.

Guido,

Did you apply a VERY SMALL drop of Caig De-Oxit or Pro Gold to the 
capacitor wiping contacts??? If not do so. See www.caig.com for details. 
Order a sample kit of mini sprays online.  Ten bucks or so.

>  I also have some howling feedback in the lower portions of bands 2,3,4 
> when it gets into strong signals.

Check shield cans where they mate with the chassis, tie strip ground 
points, tube socket ground points, ground pins on metal tubes - usually pin 
1 (do not use a glass tube where a metal one should be.. it will not be 
shielded as it should be..)


Roy

- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Work: Voice: 301-975-3254,  Fax: 301-948-6213
roy.morgan at nist.gov --