[Hallicrafters] Instability Issue on My SX-111

[Richard Knoppow]

    What kind of instability? If drift is it slow or rapid. Is it 
mechanical, that is if you lift the front of the receiver a 
little and drop it does it jump frequency. Might on all bands so 
try it on another band. Does it seem temperature or voltage 
related. More info will help find the cause.
    Note that being confined to 15 meters is really a help 
because it helps to isolate the problem.
On 4/9/2018 8:58 AM, Jerome Wysocki wrote:
  The only outstanding issue is instability on 15 meters, only.
> 
> I tried everything I could think of to relieve this instability problem. The band switch was carefully cleaned with a few drops of DeOxit, on the switch contacts, only. Examination with a magnifying glass showed no sign of malfunction of the bandswitch contacts.
> 
> All RF coils show electrical conductivity, so no breaks occurred. Except for the instability problems on 15 meters, the set is performing in a phenomenal manner (without further tweaking of alignment of the 50.75 KHz IF, which will be addressed, soon).
> 
> Have I overlooked anything? Obviously something is still wrong, or the problem would not exist.
> 
> Thankful for any ideas out there!
> 
> 73s
> 
> Jerry Wysocki, KC9JXE

-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL