Topband: Voltage along coax feeder
w2lk at bk-lk.com
Wed Mar 27 11:16:37 EDT 2013
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
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
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