[Elecraft] K2: Connecting a Transverter?

Martin Schmiedel [email protected]
Sat Sep 14 08:17:01 2002


Hello.
I plan to connect my 70cm-Transverter to the K2.
I don�t like the idea of connecting it to the Ant1-jack and inserting an attenuator.
Also I don�t like to connect the rx-path to Ant2.

My Transverter wants to �see� only a few milliwatts for full power, has separate jacks for
if- in /out.

So i think the best way to connect it are the XVTR IN/OUT-jacks.

Please correct me if  i�m wrong:

The AMP-Kit ( I don�t have one, just guessing) has everything to switch
a xvtr or amp to rx/tx.

Have a look at Appendix B , RF-Board, Sheet 3 of 4

There is an Xverter Interface (a sort of AMP-Kit?), which connects to
either side of W6 via Pins 5 & 3 of  J13.

If you open W6 and run the signal through  relays on the XVTR-Interface,
everything should be fine.
A circuit like that should be easy to be build.
Relay #1-position normal: rf runs from left side of W6 through the relay to the right side of W6.
Relay #1-position xvtr: rf runs to another relay#2 which connects to XVTR in/out
to provide rx/tx.
Relay#2 switches the signal-path  to xvtr-out in case of tx and to xvtr-in in case of rx.

One could supply power from outside the K2 to those relays to switch in & out,
but i don�t like that idea.

I think there is no XVTR-Interface available at Elecraft.
I didn�t find a circuit in the elecfraft articles. Well, ok, the Amp-kit...., but....

Did someone build a circuit like that?

----And most important:----

Is the K2-software capable of switching  relays in/out on the interface and leave
relay #1 in the correct positions, as long as TRANSVERTER ON is selected,
and toggle relay #2  rx/tx?
If not, please Elecraft, think of a Software Update.

73,
Martin
K2 #2706