[HomeBrew] Help with RF chokes

Mon, 14 Jul 2003 22:17:57 -0500

I built mine from plans supplied by DK Johnson W6AAQ and I put a .1 disk
cap across the motor leads and two more, one on each pole to gnd. I
stole several of those ferrite cylinders from some old keyboard leads
and put them on the power cable close to the outside of the antenna
base. I can just barely hear the motor and I now don't get bit when
keying up on 15 mtrs.

Hope this helps your situation.

Jim, N5QL

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Brian Carling
Sent: Monday, July 14, 2003 6:31 PM
To: [email protected]
Subject: Re: [HomeBrew] Help with RF chokes

** Please do NOT cross-post messages to multiple mailing lists on the
"To:" or "CC:" line of the e-mail message. **

Doesn't Radio Shack sell a brute-force RF filter for DC leads in a car
that would 
work for that? I think they used to have them a few years ago at least.

On 8 Jul 2003 at 14:06, [email protected] wrote:

> ** Please do NOT cross-post messages to multiple mailing lists on the
> "To:" or "CC:" line of the e-mail message. **
> 
> Hi Guys;
> 
> I need help again. I want to put RF chokes in the motor leads to my
> screwdriver antenna. I don't know what inductance is good for the HF
> band. I don't know if any are available commercially. I would like to
> wind my own if I knew the parameters. I measure 800 ma running and in
> excess of 10 Amperes when stalling at the end. I would not normally
> allow it to stall but I wouldn't want to lose a choke if it did. I was
> thinking about a bifiler winding on a ferrite rod (like a filament
> choke) but don't know the core material or number of turns. Any help
> would be appreciated. Thank you.
> 
> Ed Richards K6UUZ 
> 
> ________________________________________________________________
> The best thing to hit the internet in years - Juno SpeedBand!
> Surf the web up to FIVE TIMES FASTER!
> Only $14.95/ month - visit www.juno.com to sign up today!
> _______________________________________________
> HomeBrew mailing list
> [email protected]
> http://mailman.qth.net/mailman/listinfo/homebrew

_______________________________________________
HomeBrew mailing list
[email protected]
http://mailman.qth.net/mailman/listinfo/homebrew