Re: Topband: [Bulk] Handheld Impedance Analyzer

My 2c, having owned MFJ269, AIM4170, VNWA2.3 & 3, AA54, SARK110, old noise bridges, and used a friends FG-01 on a DXpedition. The MFJ is old, not all that accurate and really useless in the presence of other strong RF, eg BCB. Sold it. I'd call it obsolete vs current competition. AIM4170

Re: Topband: Handheld Impedance Analyzer

Maybe a dumb question but how can you tell the resonant freq with the AA-54. I have one and can do the graph and see where it dips to the lowest but havent figured out how to find the resonant freq other than entering freqs in the close by range and find on that has the lowest SWR. I have

Re: Topband: : Re: 1 center point to ground all 8 beverages??

Hi Felipe, I've never done Beverage switching in my antenna field, my nine receiving antenna feedlines go individually to my shack. But I'll speculate a bit, perhaps others can comment based on their actual experience. The feed point impedance of a Beverage antenna is approximately 450

Re: Topband: Handheld Impedance Analyzer

I also have AA-54 analyzers. There is no comparing the MFJ-259B to the AA-54. The rig expert unit runs circles around the MFJ in so many ways. Once you use an AA-54 I will guarantee that you will never ever want to use an MFJ analyzer again. 73...Stan, K5GO On Sun, Mar 27, 2016 at 4:45 PM,

Re: Topband: Handheld Impedance Analyzer

Try SARK-110 http://www.sark110.com/home beats others mostly hands down. 73, Martin, OK1RR Dne 27.3.2016 v 21:08 dick.bingham napsal(a): Greetings All I am getting fed up with multiple trips between new antenna matching stations and the tx-source/VSWR and not converging on a good match in

Re: Topband: Handheld Impedance Analyzer

On 3/27/2016 12:08 PM, dick.bingham wrote: 73 Dick/w7wkr CN97uj Most or all of these devices are intolerant of strong AM BCB signals. If you have BCB stations within 10 or 15 miles, try to borrow one to see if it works for your situation before buying one. If you buy one, try to get

Re: Topband: : Re: 1 center point to ground all 8 beverages??

Hello Frank Thank you for your email, just one more question. Do you put the relay directly at each antenna wire or do you just connect the ground to a common point and you select and deselect the antenna you want to be connected to ground? 73s Filipe CT1ILT Sent from my Huawei Mate 8 Em

Re: Topband: Handheld Impedance Analyzer

Hi Dick, I have an AA-54 and its the best hand held antenna analyzer I've ever owned. 73 Frank W3LPL - Original Message - From: "dick.bingham" To: topband@contesting.com Sent: Sunday, March 27, 2016 7:08:09 PM Subject: Topband: Handheld Impedance

Re: Topband: Topband Heard Island

Keep at it Gents! I was fortunate enough to work VK0EK yesterday 03/26/16 @ 20:24Z at our Grey Line on my magnetic loop antenna. They were only audible for 5 minutes at best.. Great sigs though. Truly 599 I see there was a circuit to NA from Heard Island @ 01:00Z today. Good

Re: Topband: Handheld Impedance Analyzer

On Sun, Mar 27, 2016 at 2:40 PM, Jim Brown wrote: > I don't have time to write off-list replies to questions that have general > interest, so I'm responding on the list. Same here. :-) My "quick and dirty antenna analyzer is still a 10+ year old MFJ-259B. I > also

Re: Topband: Handheld Impedance Analyzer

On Sun,3/27/2016 12:08 PM, dick.bingham wrote: I certainly do not want to restart this topic but new stuff is becoming available and I don't want to settle for second best if 'best' is not 2X more costly! I don't have time to write off-list replies to questions that have general interest,

Re: Topband: : Re: 1 center point to ground all 8 beverages??

Hi guys any other suggestion? Maybe this is the reason why my EU direction bevs never worked fine... the ground rods are about 40cm from each other. What about using 1 radial in each direction attached to each ground rod? 73's Filipe Lopes CT1ILT - CR6K F4VPX - TM3M 2016-03-22 16:21 GMT+01:00

Topband: Handheld Impedance Analyzer

Greetings All I am getting fed up with multiple trips between new antenna matching stations and the tx-source/VSWR and not converging on a good match in quick order ! Please send me - OFF LINE - your recommendation for a handheld impedance measuring tool that covers 400KHz to at least

Re: Topband: Post contest season: TX antenna vs RX antenna cros-stalk. What do you do?

On Sat,3/26/2016 3:49 AM, Mark van Wijk, PA5MW wrote: Our fixed setups usually had harmonic coax stub filters per individual antenna. You may find my applications note on optimizing the location of harmonic stubs useful. It's on my website. k9yc.com/publish.htm Using the technique I've