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Messages - Lamewolf

Technical Corner / Re: $21 Full Function QRP tuner
October 07, 2013, 04:44:09 pm
Good price, but I just finished building a T-match tuner from parts I had on hand.  I had an enclosure that is almost the exact same size as my Yaesu FT-817 so it looks like it was made for the 817 and I even had room on the front panel to add a 3/8" x 24 thread antenna mount so I can put a telescopic whip on the tuner for manpack operation.  With a 6' whip it will tune 10 thru 40 meters and with an add on coil at the base of the whip it will also tune 60 & 80 meters !  Haven't made any contacts with it yet, but the weather is nice this evening, so I'll take it to the back yard and give it a try.
Antennas / Re: "Portable" Antennas
October 05, 2013, 04:18:24 pm
Quote from: cockpitbob on September 04, 2013, 10:57:33 pm
Quote from: gil on September 04, 2013, 10:42:56 pm
You don't need to spend that much Bob. You can get a high voltage air capacitor for about $70, and a thick 10ft coax patch cable to use for the loop. Use a toroid core for feeding, and you'll get your Alex loop for about $100. That's what I'm going to do..

Great!  Me too.

If you are running QRP power levels, you don't need the high voltage cap.  Google the Rockloop antenna, its made of wire with a small air variable and will work several bands, and you can make it bigger for use on lower frequencies.  Just make some sort of collasible frame for it from wood or PVC pipe and you have a portable antenna that will knock down to a small package.  Good thing about magnetic loops is that they will work well even at low heights !