[Elecraft] KSYN3A tuning noise on 40m

[Johnny Siu]

Hello Arie,
I tried your settings in my K3 #11xx and do not have any tuning noise issues.  I am afraid I cannot provide you with further assistance in this area.
In case, you find out the answer, please do share with the group.  These are ancient K3 users like me in this email listing.
73
Johnny VR2XMC
      寄件人︰ Arie Kleingeld PA3A <pa3a at xs4all.nl>
 收件人︰ elecraft at mailman.qth.net 
 傳送日期︰ 2015年05月4日 (週一) 9:31 PM
 主題︰ [Elecraft] KSYN3A tuning noise on 40m
   
Hi all,

I just installed two new KSYN3A's in K3 #1255. I found high tuning noise 
on 40m.

First case:
On 40m S-3 tuning noise in the MAIN RX while tuning the MAIN RX

To reproduce:
mode: SSB, normal bandwidth
freq: 7000 -7200
no antenna connected
pre-amp off
att off
full RF gain
AGC-S
VFO tuning noise reduction Mod has no effect.


Second case, with SUB RX on:
Listening on MAIN RX
Same tuning noise audible on MAIN RX while tuning the SUB RX


Third case, with SUB RX on:
Listening on SUB RX
SUB RX has no tuning noise, neither tuning the SUB RX nor tuning the MAIN RX

(I switched the two SYNT3A's, main to sub, sub to main: NO difference)


Can anyone confirm this, or is #1255 unique in this?



73
Arie PA3A

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