I guess Ashraf wants the BC signal just to optimize for f/b, so no local
signal or interference.
SWR is irrelevant with a beverage, everything below 3 will be OK and it does
its job with higher SWR as well.
73
Peter, DJ7WW
-Original Message-
From: Topband
Another question might be; how close by is this BC station or any other AM
BCB stations?
Please consider a HP BC stopfilter
73 Mark, PA5MW
-Original Message-
From: Topband On Behalf Of Ashraf Chaabane
Sent: Wednesday, July 04, 2018 4:40 PM
To: pa...@home.nl
Cc: topband@contesting.com
Hello Ash,
Your results are normal for a typical Beverage. Receiving performance
is not significantly degraded by imperfect matching of the coaxial feedline
to the Beverage feed point or by non-optimum termination resistance.
You could optimize your matching transformer and termination
On Wed, Jul 4, 2018, 12:16 PM Scott Meister via Topband <
topband@contesting.com> wrote:
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my one plug in my officd/livingroom is dead
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Hello Ash!
For a broadband RX antenna, that match looks good. Exactly what I see with
my AIM analyzer when looking at my BOGs. Don't mess with it.
73
Lloyd - N9LB
-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Ashraf
Chaabane
Sent: Wednesday,
Hi Ash,
Some info:
- SWR curve median will always slowly rise.
No action; this has to do with parameters which slowly affect at higher
freq.
That is rather irrelevant on the lowbands 160-80-40
- Termination +matching adjustment is optimal at 'minimal amplitude' of the
SWR curve
Meaning; the
Mark,
I'm planning to have the termination value adjustment excercice for F/B
maximisation using a BC station signal. However, does SWR measurement have
to do also with the termination value? Or that's rather the matching
transformer that I should act on?
I now have an antenna analyzer and
Based on my field installed beverages experience, I would say this is
exactly what I always read on my ant analyzer.
Ground and local air/bush moisture level changes, like after rain or such,
will affect readings too.
I would do optimization only if this installation was permanent and you have
> What shall I do?
Nothing? What you measure should have no practical impact on
performance.
73,
... Joe, W4TV
On 2018-07-04 10:13 AM, Ashraf Chaabane wrote:
Hi All
I measured the SWR in my beverage antenna; the SWR fluctuates between 1.5
and 3 in a range of 1.8 to 7 MHz. (See:
Hi All
I measured the SWR in my beverage antenna; the SWR fluctuates between 1.5
and 3 in a range of 1.8 to 7 MHz. (See:
https://drive.google.com/drive/folders/0B9AtNpPfAOUMRDNsaXROMG1VUTg?usp=sharing
)
I know SWR should not vary too much. However, some people are suggesting
adjusting the
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