The resistance in the anode circuits of the LEDS only serves as an attempt
at limiting the current through the FWD LED to full brightness (and a
constant current source would best replace this)--and to keep it from
"burning out."

My goals are this:
1) CHEAP!!
2) Cheap!
3) Fewest possible parts...
4) Marginal functionality...

I want to be able to cover the world with these devices (put one on every
single antenna project of mine (even the EH Antenna!!! grin)

I will continue to toy with the design as my time permits....

I am quite willing to suffer the slings and arrows of others, education is
expensive yanno!!! And, I do see most, if not ALL, are saying there is much
more to SWR than at first it seems...

Thanks Reg...

Warmest regards,
John

"Reg Edwards" wrote in message
...
|
| John (Smith), all you have is a circuit which might light up a couple
| of light-emitting diodes from an RF source via a current transformer.
| What purpose is served by the 100K resistor is anybody's guess. But it
| has nothing to do with SWR.
|
| As Cecil implies, you should go right back to square one and think
| about it.
|
| Actually, you are in good company. Most people don't know how their
| SWR meter works or what it does. Most people and Tx manufacturers
| don't connect it in the correct place for it read SWR on the
| transmission line. Consequently it doesn't even indicate SWR and its
| name is a very misleading misnomer.
|
| All it indicates is the magnitude of the reflection coefficient of the
| load on the transmitter relative to the impedance the transmitter is
| designed to see. And it only does THAT provided the meter has itself
| been designed to cater for the same impedance. It is fortunate there
| exists a standard impedance of 50 ohms.
|
| But don't allow me to put you off. Just obtain a circuit diagram of a
| so-called SWR meter (an HF version) from a handbook and, with little
| more than Ohm's Law, you can see and work it out for yourself.
|
| Reg, G4FGQ.
|
|