[TenTec] Antenna Analyzers

[WA2BPE]

Since the subject was brought up, why doesn't MFJ provide schematics with
equipment?  It surely can't be paranoia about copying the circuit - reverse
engineering is still possible albeit more tedious.  I have a few minor pieces
of MFJ equipment and scowl every time I want to understand how something is
supposed to work. For me, this is a disincentive to buy their equipment and can
easily outweigh cost.  Do they provide schematics with some and not others?
Are the designs changing (but not the model number) so the product is in a
constant state of change?

Just what *is* the reason??

73,

Tom - WA2BPE

Bill Fuqua wrote:

> I have used 3 MFJ analyzers. Two have failed one was a fault in the
> analyzer the second was an accidental application of reverse supply voltage
> ( picked up a reverse polarized 12 volt plug by mistake) and the third I am
> using now. My major complaint is the same that I have with ICOM. That is
> that they don't provide any documentation such as schematics or anything
> that would be useful in repairing them. At least ICOM will sell you a
> service manual. MFJ will not provide anything at any price the best I can
> tell. So the other two remain unrepaired and the third is one my father
> gave me when he won it at a hamfest. I would not have spent real money on
> it but it has been useful.
>
>       Oddly enough, reason the second was destroyed was due to an early
> model of the Autek WM1 Computing Deluxe Power/SWR Meter I had. The early
> ones had the inner pin of the power plug ground and the sleeve  +12 volts.
> I mistakenly plugged the plug that was supposed to go to my Autek WM1 into
> my MFJ analyzer and smoked it. Right after that I glued the connector to
> the socket and have labeled wires to connect to the power supply.  I
> believe they have changed their product since then. But I wonder how many
> used older versions of the WM1 are connected in reverse.
>
> 73
> Bill wa4lav
>
> At 08:15 PM 7/3/2003 -0400, you wrote:
> >Hi,
> >
> >I'm considering the purchase of an antenna analyzer but need some advice.
> >My first choice was theMFJ 269 but, after some research I wonder about the
> >Autek VA-1. They both seem to do the sae thing but there is a significant
> >difference in price. I checked out the reviews on eham and the 269 had a
> >rating of 3.8 out of 5, the vA-1 was a little higher but fewer reviews. I
> >will appreciate any and all comments or suggestions for another choice.
> >TIA,
> >
> >Vince Santis, N1VS
> >Winsted, CT
> >vsantis at earthlink.net
> >
> >
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