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Author Topic: Mobile HF Antenna - need help  (Read 966 times)
KF4SNV
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Posts: 1




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« on: July 09, 2001, 11:13:00 PM »

I need to "wind my own" HF antenna, much like a Hamstick.  The frequency is 4.469mhz.

Any information on doing my own would be of great hlp.

Thanks.

Scott
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KL7IPV
Member

Posts: 984




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« Reply #1 on: July 14, 2001, 05:37:35 PM »

I don't know if you plan on transmitting on that frequency, but I used a bicycle flag whip as the support. I wound the amount of wire I figured for the frequency I wanted plus about 10% on the flag whip. The I wound the wire so it was tightly wound at the base and loosened as I reached the top of the whip. I used #14 enameled wire and placed heat shrink over it after I got it all wound and looking fairly good. I made a trifilar toroid balun using a T-200 form for the toroid from Amidon and fed that with RG-58U coax (My last paperback 1997 ARRL handbook has it on page 20.28 for the coil). It receives across all the bands and although I don't use it to tranmsit here in Las Vegas, I did use one like it in Anchorage with an MFJ tuner. It is only about 6 1/2 feet tall and has the bicycle mount you can use to attach it where you need it to be. I use it also with my NC-109 when I listen to the AM broadcast bands as well ( Rush comes in great! )
73,
Frank
KL7IPV
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K8KAS
Member

Posts: 569




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« Reply #2 on: July 18, 2001, 04:27:57 PM »

Why don't you find a Hamstick for 75 meters and just cut the top whip until you resonate.You will only have to cut a few inches off. I find Hamsticks
for $5 to $10 bucks all the time.
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