All,
There is an antenna reflector that would be more appropriate for the
is post. Try it out.
Welcome to the anten...@mailman.qth.net mailing list! Antennas is a
mailing list (reflector) devoted to discussing, comparing,
evaluating,
designing, and constructing antennas (aerials) of all types,
e
2HMM
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mel Farrer
> Sent: Friday, July 12, 2013 11:42 AM
> To: WM3M; mcduf...@garymcduffie.com; elecraft
> Subject: Re: [Elecraft] Off Topic -- Yagi Antenna SWR measurem
On 7/12/2013 9:12 AM, John Santillo wrote:
What I do especially at the lower bands is put the antenna up in the air
around 10 to 12 feet and adjust it to just below the bottom of the band.
For example for 40M I would tune for best VSWR at 6.95MHz. Then when the
antenna was raised the resonant po
Mel Farrer
Sent: Friday, July 12, 2013 11:42 AM
To: WM3M; mcduf...@garymcduffie.com; elecraft
Subject: Re: [Elecraft] Off Topic -- Yagi Antenna SWR measurement ?
I used a 12 foot tall four leg scissor ladder. Close but no cigars. The
lower bands will probably show the higher SWR, and a lower shi
...@garymcduffie.com; elecraft
Sent: Friday, July 12, 2013 8:09 AM
Subject: Re: [Elecraft] Off Topic -- Yagi Antenna SWR measurement ?
What I have done is clamp it to my wooden deck railings on a 8 foot mast,
the higher your deck is the better.
That worked pretty well for me, little change once it was
Thanks guys who answered the question -- good convergence. I had already
told my friend that his readings would not be very accurate but he is concerned
about putting an old beam antenna up that had been out of service and laying
out on the ground in the open for some time (years?).
I think I hav
You might get a somewhat more representative SWR value if the yagi is
vertically mounted so that the reflector is closest to ground and the
director at the top.
The idea is that the reflector will partially decouple the close in
ground surface from the antenna. I've done this with VHF and UHF
: elecraft
Subject: Re: [Elecraft] Off Topic -- Yagi Antenna SWR measurement ?
On Fri, 12 Jul 2013 07:50:43 -0700, Phil Hystad wrote:
Question: is this accurate or does the proximity of ground (maybe two
feet high)
so strongly affect the SWR reading that the measurement is not accurate.
Not
On Fri, 12 Jul 2013 07:50:43 -0700, Phil Hystad wrote:
> Question: is this accurate or does the proximity of ground (maybe two feet
> high)
> so strongly affect the SWR reading that the measurement is not accurate.
Not accurate at all. Most manufacturers say to stand the beam up so it
is point
careful, ladders are more dangerous than towers,
Have a great day,
--... ...--
Dale - WC7S in Wy
> From: phys...@mac.com
> Date: Fri, 12 Jul 2013 07:50:43 -0700
> To: Elecraft@mailman.qth.net
> Subject: [Elecraft] Off Topic -- Yagi Antenna SWR measurement ?
>
> I know th
I know this is OT but there are so many knowledgable people on this reflector
that I can't pass it up.
A friend has a Yagi antenna (HF tri-bander) that he wants to measure the SWR
before he raises the antenna up on the tower.
Question: is this accurate or does the proximity of ground (maybe two
11 matches
Mail list logo
