Thread: Homebrew traps
View Single Post
  #9   Report Post  
Old March 28th 08, 06:14 PM posted to rec.radio.amateur.antenna
Tam Tam is offline
external usenet poster
 
First recorded activity by RadioBanter: Jan 2008
Posts: 42
Default Homebrew traps


"Barrett" wrote in message
. uk...
Some one sent me an email and said these will do the job. Ceramic
capacitor disk 10KV/1000pF. Do you think these would work?


Some ceramic capacitors have the value change with the instantaneous applied
voltage. I know somebody who tried to use one in a tuned circuit - complete
disaster. Do not use the ones that are meant for power supply bypassing.

Tam/WB2TT

This is my first attempt at making traps and I do not fully understand how
they work. I am willing to learn as this is what makes the hobby great but
I cannot find enough step by step info to lead me in the right direction.


Thanks


"Cecil Moore" wrote in message
t...
Barrett wrote:
What sort of capacitors can I use in parallel in making some 7MHz and
3.7MHz wire wound traps?


I've had good luck with door-knob caps.
--
73, Cecil http://www.w5dxp.com