[Elecraft] 20th century K2s (was RE: Time for a new Volume pot?)

[Jeff Stai]

hi Ron - ol' #525 has been getting pretty scratchy lately, and it has 
the AF Pot Mod. I guess they just get old and scratchy like the rest 
of us...;-)

I found my misplaced XG1 the other day and went around measuring rigs. 
#1250 was singing along at MDS=-136dBm, but #525 wasn't close (haven't 
used it since Field Day, I'm afraid). After a bit of poking around, I 
found a marginal solder joint had finally gone bad in the T-R switch 
(RFC2). Some new solder and good as #1250!

cheers! - jeff wk6i


At 07:54 PM 1/3/2006, Ron D'Eau Claire wrote:
>>From the serial number you might consider making the audio gain pot mod
>while you're in there if it hasn't been done yet. It makes a huge difference
>in how the audio pot operates, making adjustment less touch even with a new
>pot. 
>
>On the Elecraft web site, go to Builder's Resources / Application Notes / K2
>AF Pot Application Note for details. 
>
>Ron AC7AC
>
>-----Original Message-----
>From: elecraft-bounces at mailman.qth.net
>[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Bill Allen
>Sent: Tuesday, January 03, 2006 6:51 PM
>To: elecraft at mailman.qth.net
>Subject: [Elecraft] Time for a new Volume pot?
>
>
>The volume knob has gotten very, very touchy lately.  Very scratchy when
>adjusting and suddenly blaring at top volume.  Is it time for a new volume
>pot on my K2?
>
>73,
>Bill Allen - wa5pb
>K2# 1068

--
Jeff Stai               jds at twistedoak.com
Twisted Oak Winery      http://www.twistedoak.com/