portable RDF antenna

[delta]

RDF antenna loop. I made one of these back in the 80's the instructions was in a magazine called radio active, at least i think it was that mag. Anyway do any of you know how to put one together? The one i made was a loop of about 10" made from thin copper plumbers pipe of about 8mm with a variable capacitor, i put on a small wooden dowel handle. I can't remember anymore than that.

 

[Wire Weasel]

I think the best and easiest way to go would be the Doppler kit, or completed unit, that Ramsey sells.

DDF1 - Doppler Direction Finder Kit - Ramsey Electronics

good luck

 

[delta]

That unit looks pukka wire weasel but i was hoping to build a simple rdf loop. Does anyone know how Thanks for the link though...

 

[Moleculo]

The ARRL Antenna book has plans for building what you're wanting. If you don't find it, let me know and I'll figure out a way to scan/transcribe it here.

 

[delta]

The ARRL Antenna book has plans for building what you're wanting. If you don't find it, let me know and I'll figure out a way to scan/transcribe it here.

That would be just great, i can't find anything on building a rdf loop. Any help is much appreciated. Thank you. Just a simple RDF loop would do just fine.

Delta.

 

[packrat]

At the last field day I attended, the guys were making rdf antennas from old steel measuring tapes. The antennas are virtually indestructable, and everyone I know has at least one broken measuring tape lying around.

PR

 

[Moleculo]

Try this link: AA5TB - Small Loop Antennas There are several plans and pictures toward the bottom and a calculator to help figure out the dimensions / parts you need.

 

[C2]

He's missing the capacitor in this one, which would go between the centers of the coax loop ends at the feed:

http://www.palosverdes.com/pvarc/Projects/MW_Loop.pdf


This is another good design, images are a bit misleading though:

The Adcock HF RDF Antenna - Ham Radio Library

 

[Beetle]

It would be helpful to know the frequency range you're interested in.

 

[Moleculo]

It would be helpful to know the frequency range you're interested in.

I'm guessing by the section that this is posted in.....

 

[delta]

It would be helpful to know the frequency range you're interested in.

It will be at 27mhz cb in the uk 27/81 freqs eg 27.781mhz uk 40 channels