PH2LB shack on the internet.

QRP-Labs broadcast band filter a QRP-Labs filter compatible HighPass filter configured for Broadcast band suppression.
Component Measuring Adapter for QRP-Labs filter adapter a small add-on to measure components with your QRP-Labs filter adapter.

Jul 31, 2022

K2 BPF aligment with a NanoVNA

Category: General

Posted by: lex

The used Elecraft K2 I got my hands on needed some work on the 20m band and for the alignment of the 20m BPF I could follow the Elecraft manual. But owning a NanoVNA . . . . . well you know where this is going ;-)

Elecraft K2

In July 2022 I got my hands on a used Elecarft K2 (RFBoard _{(2002 Rev B3R) cpu 1.09, Controlboard cpu 2.04R)} with a few options :

KAF-2 - Audio filter and realtime clock _{(2001 REV B 1.06)}
KAT-2 - Internal antenna tuner (with 2 antenna inputs) _{(1999 REV C)}
KNB-2 - Noise blanker_{(1999 REV D)}
KSB-2 - SSB unit _{(1999 REV D CPU 2.02)}
DIY PTT output

The Elecraft K2 is a modular transceiver, it has even more room to add even more modules like :

KIO-2 - RS-232C interface and AUX I/O
K160M 160M and 2nd RX Port
K60XV - 60m + Transverter Adapter Kit
KBT2 Battery

Although it needed some work (for example : the 20m band probably needs alignment because the RX is several S points lower then the other bands, there are a few (undocumented?) MODS etc), but I have used it to listen on the bands (love the quite and clear character of the RX) and made some QSO's with it. It's a bit getting used to especially all the filters, the control options but the manual is helping on that part.

I'm quite happy with it and asked my self why didn't I buy one years ago as a kit?

k2_002