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 [mailto:[email protected]] On Behalf Of [email protected] Sent: Mittwoch, 4. Juli 2018 21:56 To: 'Ashraf Chaabane' Cc: [email protected] Subject: Re: Topband: Beverage Antenna Tuning 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 <[email protected]> On Behalf Of Ashraf Chaabane Sent: Wednesday, July 04, 2018 4:40 PM To: [email protected] Cc: [email protected] Subject: Re: Topband: Beverage Antenna Tuning 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 multimeter. What kind of optimization I can carry out? (The beverage is permanently installed). 73 Ash On Wed, Jul 4, 2018 at 3:23 PM <[email protected]> wrote: > 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 the time and tools available. > > 73 Mark, PA5MW > > > > -----Original Message----- > From: Topband <[email protected]> On Behalf Of Ashraf > Chaabane > Sent: Wednesday, July 04, 2018 4:13 PM > To: [email protected] > Subject: Topband: Beverage Antenna Tuning > > 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?us > p=shar > ing > ) > I know SWR should not vary too much. However, some people are > suggesting adjusting the termination resistor. Others suggest checking > the transformer number of windings for a good match. What shall I do? > > 73 Ash 3V8SS/KF5EYY > _________________ > Topband Reflector Archives - http://www.contesting.com/_topband > > -- Ash ~ 3V8SS/KF5EYY http://www.kf5eyy.info/ Phone/SMS/Whatsapp: (+216) 22670026 Skype: kf5eyy _________________ Topband Reflector Archives - http://www.contesting.com/_topband _________________ Topband Reflector Archives - http://www.contesting.com/_topband _________________ Topband Reflector Archives - http://www.contesting.com/_topband
