[CQ] antenna building?

Michael Shiloh michaelshiloh1010 at gmail.com
Thu Nov 12 19:50:45 UTC 2009


Both yours and Mark's suggestion are excellent. I'm up for either.

The question is, is anyone else interested in building either of these? 
We could buy the parts together and probably build them in an afternoon.

I'm interested in 2m and 70cm, both well suited to the two suggestions.

Jonathan Lassoff wrote:
> Excerpts from Michael Shiloh's message of Thu Nov 12 10:39:30 -0800 2009:
>> i need to make a very simple antenna for my dual band handheld (FT-60R), 
>> so that i can use it inside my faraday cage (shipping container) at the 
>> shipyard.
>>
>> i envision a simple vertical perhaps with 4 radials. it will be mounted 
>> on the roof of my container and so has a nice metal groundplane.
>>
>> to simplify construction i don't  want to raise it very high. i hope 
>> that a 2 * 4 stuck in one corner of the container will suffice. i will 
>> somehow have to clear the (unused) solar panels on my roof.
>>
>> my constraints are:
>>
>> 1. price must be near zero
>> 2. scrounged materials might be quite exotic but are entirely unpredictable
>> 3. reasonably easy to construct
> 
> For which band were you thinking? I've had good luck in the past making
> verticals with a chassis-mount SO-239 connectors.
> 
> The most common kind has a square plate to rest against the chassis and
> four holes in the corner. I would solder four copper wires as a ground
> plane and angle them down to match the right impedence.
> 
> In the center pin, I soldered another copper wire straight upwards.
> 
> The lengths of the wires can be adjusted for different frequencies.
> 
> Pretty cheap ('cept for the cost of the connector), and functional.
> 
> --j
> 



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