View Single Post
  #6   Report Post  
Old April 8th 07, 01:03 PM posted to rec.radio.amateur.homebrew
Ian White GM3SEK Ian White GM3SEK is offline
external usenet poster
 
First recorded activity by RadioBanter: Jul 2006
Posts: 232
Default simple(?) question...

John A wrote:

"Dave" wrote in message
...

What do you do for resistors if you can't get carbon composition in the
ratings you need?


Do what the professionals do - use film resistors. Concerns about inductive
effect at HF are greatly exaggerated. There are rarely as many "turns" as
often suggested. ( cf. Radcom Jan 2007, p58, fig 1! )

As the person who wrote that article, I strongly agree.


where can I get carbon composition resistors these days?


They are still available. Typically, Farnell offer 220R to 4K7 at 1W - but
they are quite expensive.

And obsolete, because for every application there is now a better
alternative - most often, metal film.


--

73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek