[Elecraft] K3 12m problem

[David Lankshear]

Barry, it sounds like you need to install the K3VFOFILTERKIT, see here:

http://www.elecraft.com/order_form_parts.htm#K3 Parts

I had a lot of tuning noise on several bands.  All my screws are nice and snug and my TMP cables run as per Elecraft's recommendations.  Post-modification, I still get some tuning noise but on most bands (except 6m and the CW end of 10m) it's below the band's noise level.

Take a look at the instructions, dig out two 470 ohm resistors and two diodes and save yourself $10.  It's an easy mod to apply, but don't forget the firmware change, quote:

1. Download and install firmware revision 3.24 or later. Refer to the K3 software page for instructions.
2. IMPORTANT: Locate the CONFIG:VCO MD menu entry, and tap the 1 keypad switch until you see SPI 2; this selects the new bus clock rate. (The default setting is SPI 1.)

I'm still waiting for Elecraft's suggestions to improve the hash level, but must admit, I haven't checked 12m YET because of antenna restrictions.

73 DaveL  G3TJP