[Antennas] hairpin matches

Thu Aug 8 14:19:33 EDT 2013

I do not think the wrong length will skew the pattern at all.But it will 
make the impedance different. Thats the whole reason it is there in the 
first place is to make the match. I'd make sure it is adjustable, and 
leave it a bit long at first so it can be slowly shortened to get best 
match.
Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 8/8/2013 12:35 PM, ka8vit at ka8vit.com wrote:
> Yes.
>> Think of the hairpin as a one-turn coil.
>> Usually used with a shortened driven element.
>> 73 - Bill KA8VIT
>>>> On August 8, 2013 at 12:51 PM "C.Whitaker" <whitaker at pa.net> wrote:
>>>>>> de WB2CPN
>> You know the length of the hairpin for 10-Mtrs, and that can be scaled
>> down to 6-Mtrs.
>> A simple ratio is fairly close.
>> The main noticeable effect of the 6-Mtr hairpin being off a bit is that
>> it may cause the
>> beam pattern to shift a few degrees either way.
>> The SWR may or may not be a very good indicator of the match you achieve.
>> 73 Clete
>> ====================================
> Bill Chaikin, KA8VIT
> USS COD Amateur Radio Club - W8COD
> WW2 Submarine USS COD SS-224 (NECO)
>> ka8vit at ka8vit.com
> http://ka8vit.com
> http://www.usscod.org
> ====================================
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