[Lowfer] Antenna Analyzer

[k2ors at verizon.net]

Hi Dex,

       I have the AEA VIA-HF, the Autek RF-1 and an MFJ-249.
The MFJ and Autek don't really have low frequency coverage however.
Autek does make an VA-1 good to 500kHz and Dale KW1I has one that he uses on 500kHz.
The AEA VIA-HF does work well down as far as 137kHz at least.

I have a problem with strong local AM BC stations throwing the reading of any analyzer off though.
It helps a lot to use either a high-pass or low-pass filter to attenuate MW signals before making a measurement.

The instrument I use most however is a Telepost LP-100A DIGITAL VECTOR WATTMETER:
http://www.telepostinc.com/

It measures complex impedance NOT Just SWR!!!
No problems with MW signals mucking up the readings!

I have a custom coupler for the LP-100A  that is good down to 100kHz and will handle up to 6kW in the HF range, I have a second coupler for the higher freqs.
The best part is that is calibrated by Larry to NIST traceable accuracy! (Not likely to get that from an MFJ!)



73 Warren K2ORS
          WD2XGJ
          WD2XSH/23
          WE2XEB/2
          WE2XGR/1


Oct 12, 2010 09:43:41 AM, lowfer at mailman.qth.net wrote:

I'm considering buying an antenna analyzer and retiring my Knight Kit 
RFZ bridge and Eldico AT-1 Antennascope to my antique test instrument 
museum.   I would like to have one with a range of .1 to 500 MHz but it 
looks like I will have to comprised on the high end range but don't want 
to on the low end.  I found a list of devices available on eHam which 
has been helpful:

http://www.eham.net/reviews/products/31

Who on this group has what analyzer and what are your comments about it?

Dex
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