[Elecraft] "Digital" SWR meter from web reference

[Stuart Rohre]

Folks, let me point out, that the photo of the referenced digital readout
SWR meter shows the pickup circuit with clarity.  It is the Stockton meter
circuit used by many in QRP Community.

It is a good, but simple, circuit with no magic accuracy capability.  Even
with 1 per cent resistors, I seriously doubt it will do 0.01 SWR readouts
with that accuracy.  But, SWR is used by finding a MINIMUM what ever the
value.

If you have a dipole antenna, you will not find a 50 ohm 1:1 point if the
antenna is at optimum height, for its feedpoint is actually closer to 72
ohms.

The Bird meter this meter is compared to, carries manufacturers specs of 5
per cent as George pointed out.  Few, if any, practical multiband SWR meters
are any better than that.

I am immediately suspicious of any web site for an instrument that does not
have a bullet for "Specifications", but prominently advertises it can
customize the meter digital display with your Vanity Call!

It is an attractive meter, but I would not give it any special properties
over a good analog readout meter on a Bird Wattmeter.
73, Stuart K5KVH