Tnx Pete and Marco...yes, I agree that using an RF ammeter to set impedance
match, once resonant, is a simple way for those that are without a
scopematch. For most LF/MFers however, it is only a matter of time before
they construct the scopematch!
Steve 73
Hi Steve,
wish to add just one comment sharing with you my experience.
For routine tests or measures on antennas since almost a dozen of
years use an home made VNA (I realized the N2PK VNA and still works
fine!) this make available visual and numerical datas which very
important to understand what I'm doing. As everybody, of course, I like
to have an instrument in line while transmitting just to see is
everything is "normal" and under control. For this purpose I made a
small console which includes the low pass filter, an RF ammeter and an
SWR bridge is very easy to design and make yourself such instrument I
made mine covering from 137kHz to 160m and I guess it is reliable at
least as all "in line" meters.
73 de Marco IK1HSS
----Messaggio originale----
Da: [email protected]
Data: 2-nov-2016 19.12
A: <[email protected]>
Ogg: LF: Re: SWR Bridges
Many thanks to all of those taking the time to reply to my inquiry. It
seems
that results vary depending upon what meter is being used but it sounds
as
though only a few are having reliable / accurate results. I normally
use the
scope match and call it the 'most valuable piece of gear in my shack'
but
was curious about suggesting the use of an HF SWR bridge for those that
do
not yet have such a thing, and if it would be a reliable method of
matching
an antenna. In some cases 'yes', but it seems, in most cases, may be
unreliable and only lead to confusion.
Steve 73
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WEB - "The VE7SL Radio Notebook": http://members.shaw.ca/ve7sl
VE7SL BLOG - "Homebrewing and Operating Adventures From 2200m to Nanowaves":
http://ve7sl.blogspot.ca/
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