Topband
[Top] [All Lists]

Re: Topband: Voltage along coax feeder

To: topband@contesting.com
Subject: Re: Topband: Voltage along coax feeder
From: Les Kalmus <w2lk@bk-lk.com>
Reply-to: w2lk@bk-lk.com
Date: Wed, 27 Mar 2013 11:16:37 -0400
List-post: <topband@contesting.com">mailto:topband@contesting.com>
Dave,

For design parameters check out: http://en.wikipedia.org/wiki/Bias_tee

I use a home brew one for reversing remote beverages which is a .1uf cap and any small rf choke in the 100uh and up range that will handle relay current. In my case the relay current I used as a minimum design level was 150ma. You can buy them or use a binocular core and wind one.
I use only +/- 12v dc, not ac.

73, Les W2LK


On 3/26/2013 4:48 PM, David Cole wrote:


Could anyone please point me in the direction of a circuit to feed +12 -12 and 
AC along the feeder to my beverages to switch 3 relays - thanks all from Dave 
in the UK
All good topband ops know fine whiskey is a daylight beverage.
_________________
Topband Reflector



All good topband ops know fine whiskey is a daylight beverage.
_________________
Topband Reflector

<Prev in Thread] Current Thread [Next in Thread>