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Cutting/tuning lowband portable antenna
Posted: Wed Oct 17, 2007 5:21 pm
by k9.hazmat
I have a lowband HT750, and up until the other day, I wasn't aware that a portable antenna could be cut to match freqs. So, with that, I'd like some info on how to determine how long this portable antenna should be and the proper way to cut it. Any help would be appreciated. My frequencies are 44 Mhz range.
Thanks!
Re: Cutting/tuning lowband portable antenna
Posted: Wed Oct 17, 2007 6:45 pm
by Tom in D.C.
Most people just go ahead and use the antenna the
manufacturer provides for their portables. Cutting
or otherwise adjusting these kinds of antennas is at
best difficult. The results are hard to measure unless
you have sophisticated equipment to do so, owing to
the way the antenna is mounted. If you can't get
the current Motorola antenna for 44 mHz then you
might want to try fooling with an aftermarket unit such
as the one that Tessco offers which comes with the
Motorola 1/4"-32 threaded connector.
Here is the link to the Tessco catalog:
https://www.tessco.com/products/display ... ventPage=1
Re: Cutting/tuning lowband portable antenna
Posted: Thu Oct 18, 2007 1:05 am
by N9LLO
I bought an original Motorola antenna for my lowband P200,it came with a cutting chart. Does the lowband 750 use a stud antenna like the P200 or an SMA like the other bands?
Chris
N9LLO
Re: Cutting/tuning lowband portable antenna
Posted: Thu Oct 18, 2007 3:10 am
by Grog
N9LLO wrote:I bought an original Motorola antenna for my lowband P200,it came with a cutting chart. Does the lowband 750 use a stud antenna like the P200 or an SMA like the other bands?
Chris
N9LLO
From what I've read, I am 99% sure they
do not use a SMA (as the Jedi).
Re: Cutting/tuning lowband portable antenna
Posted: Thu Oct 18, 2007 5:47 am
by Al
If you have a lowband NAB6064 molded antenna, the cutting chart for the lowband HT750 antenna is shown along with instructions for cutting on page 5-6 of the HT series basic service manual. If you don't have the manual, PM me with a fax number and I'll provide it.
Re: Cutting/tuning lowband portable antenna
Posted: Thu Oct 18, 2007 5:48 am
by k9.hazmat
Just uses a stud. anyone have a cutting chart?
Re: Cutting/tuning lowband portable antenna
Posted: Thu Oct 18, 2007 5:47 pm
by Max-trac
Here is a chart for a duck I got for a lowband MT1000
http://www.redshift.com/~1king26/cutchart0001.pdf