Well, I should have stated my goal with this "eccentric device."

I wish an indication of SWR which is cheap, uses fewest parts possible, and
has the possibility of "automatic operation" and one can be placed on each
and every antenna I am playing with (or anything else, maybe one on the bird
fountain! grin)...

I bought a box of these LEDS at a surplus dealer, 10,000 LEDS in the main
box, with 10 sub-boxes, each containing 1,000. They are a yellow/orange
color--unique color to most I have seen...

They seem to handle 20 ma for days on end with no problem--they are VERY
bright at 5 ma (at least as bright as a "standard issue LED" at 10-20 ma)...

The info on the box is as such:
SIEMENS COMPONENTS
Made in Malaysia
LOT NO. 72870422
PART NO. Q6270303638
PRODUCT ID. LY 5436-TO
DVP NO. 2605-9491-01
D/C: 9716
PROD NO. 97700420

I have done nothing but use them, have not even taken time to drop a VOM on
'em and measured the voltage drop across one--they are my favorite for
projects (well, I am cheap and have a FEW of 'em!!!)....

My design criteria a
1) CHEAP!
2) Cheap!
3) Few parts...
4) At least marginally workable...

Warmest regards,
John

"Richard Clark" wrote in message
...
| On Tue, 3 May 2005 17:18:33 -0700, "John Smith"
| wrote:
|
| Please someone, see if you can view the page he
| http://blake.prohosting.com/mailguy2/JS-swr.jpg
|
| Hi Brett,
|
| A most unusual indicator if ever I've seen one (and I've seen many).
|
| What you have (if you can generate enough voltage - it will take about
| 35-40W of transmit power) is an emergency flasher weakly lighting the
| alternate LEDs at an HF rate.
|
| This is with Red LEDs, as I offered in another posting, if you tried
| with Blue LEDs, you would need more like 170W to weakly light them.
|
| The 100K is literally useless (as are the 1N914s), and the 1K is a
| severe handicap. Once you get past those limitations you will have a
| brighter flasher at no big hit to the overall efficiency - if a
| flasher is what you want. Mad Man Muntz with his dikes would have a
| glorious time trimming back the excess here.
|
| It might sell well to the CB crowd that wants 27 MHz strobing brake
| lights. Could even perform better for night time DX than some rear
| mounted bumper whips. Perhaps a better use of their linears - as
| legal power won't light this circuit.
|
| 73's
| Richard Clark, KB7QHC