[OKDXA] EDZ
Nelson Derks
[email protected]
Fri, 8 Nov 2002 20:05:25 -0600
Note: My ISP must be doing some work on the mail server as it's been in and
out over the past week. I don't think it's losing any mail, but, how can you
know for sure what you haven't seen? Anyway...
> Let me run this up the flag pole.
> Say i got a remote antenna switch the outdoor type,
> It has three PL conectors female, now I install one each male male
conector
> to all three.
> Then I install one each balun, the type of 1:1 normaly used in the G5RV.
> How close am I to outdoor switch? This is the part where i got lost, not
> sure if the switch itself should be ballanced to provide best results.
> Keep in mind that this is for a EDZ rez on one band.
> Tune feed for two other bands.
Rube Goldberg would have criticized this for a lack of imagination (Hi!),
but sketch it out on paper and you'll notice something... You need two
switches if the goal is to swap jumpers in and out of the tuned feeder. With
all the connectors and Baluns involved, I'm thinking a cleaner design could
be had with three double-pole, double throw relays. One relay switches
between the default position (no jumpers) and the jumper option. The other
two select Jumper 1 or Jumper 2. No extra Baluns, and as many connections as
possible are soldered.
There are such things as Stepper Relays which offer three or more positions,
but the double throw jobbies are much easier to come by. You guys keep this
up, and I'm going to end up in the yard stringing wires just out of
curiosity...
- AC5UP