LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #2   Report Post  
Old August 23rd 10, 08:07 PM posted to rec.radio.amateur.antenna
external usenet poster
 
First recorded activity by RadioBanter: Jun 2006
Posts: 1,374
Default Antenna analyzers, opinions please...

I have only one comment which applies to most if not all of the amateur
level products, as well as a very high quality HP impedance meter I used
years ago.

I live about 15 miles from hilltops where the local AM, FM, and TV
broadcast towers are. The signals from those stations are strong enough
to overwhelm the broad bandwidth detection circuitry in the analyzers
(and HP vector impedance meter) I've used, resulting in meaningless
readings when connected to an antenna. I find that I grab my MFJ antenna
analyzer for a host of jobs like measuring a ferrite core impedance,
checking the length of a piece of coax, and so forth. But for me it's
just about useless for the job of analyzing actual antennas. When I need
to measure antenna impedance I dust off an old GR bridge and use a
portable receiver for the detector in order to reject the strong ambient
signals.

Of course this isn't a problem for everyone, but it sure is for me and I
don't think my situation is unusual for an urban environment. I've had
to put common mode chokes on my thermometer thermocouple wire, my light
meter connecting wire, scope leads, and even in audio circuitry to keep
the RF out. But even one strong local station might be enough to upset a
typical antenna analyzer.

Roy Lewallen, W7EL

On 8/23/2010 11:15 AM, Peter O. Brackett wrote:
Antenna Newsgroup Denizens:

Apart from the professional 'lab grade' (and undoubtedly very expensive)
devices made by the likes of Agilent, there are on the amateur market
several antenna analyzers that are more reasonably priced.

I'm currently considering the purchase of such a device, and so...

I'm interested in hearing opinions, pro-con arguments, and/or receiving
pointers to reviews of such devices.

All thoughts and comments will be appreciated, unbiased or not.

Thanks!

-- Pete k1po
-- Indialantic By-the-Sea, FL

 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
MFJ Antenna Analyzers hints, tips hamradiolocator Antenna 4 November 28th 09 03:12 PM
Spectrum analyzers Art Unwin Antenna 16 September 26th 08 06:15 AM
Antenna/RF Analyzers anything other than MFJ? yea right Antenna 8 October 13th 07 07:12 AM
Opinions on Antenna CJJB CB 0 December 26th 03 08:57 PM
Vector Network Analyzers Harold E. Johnson Homebrew 4 September 19th 03 07:28 PM


All times are GMT +1. The time now is 04:37 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017