Amateur radio, recycling junque from the junque box!

[John Hill]

The local club station needs an HF transmatch, so into the junque box to see what could be cobbled together..


IMGP9365 by aardvark_akubra, on Flickr



IMGP9364 by aardvark_akubra, on Flickr

Totally untested but I hope the tuning range is adequate to handle the long wire that is being put up.

[Marauder]

Looks very nice from one Ham to another,Reminds me of a commercial transmatch i had several years ago worked well on long wires, always regretted getting rid of it.Let me know how you get on with it.  G0 C--

[John Hill]

Hi, the circuit is based on the Ultimate Transmatch as appeared in ARRL Handbook for many years.  The original circuit had a very wide range but I am unsure if the coil from an old ARC5 transmitter will have enough inductance for 80 metres,  time will tell.

[hopefuldave]

Maybe add another fixed inductor (or a pair) for 80 / 160M to the earth end of the rollercoaster, short with a Big Ceramic Switch when not required?

Dave H. (The other one) a.k.a. G0IZY but too busy with machines to get on the air...