On 6 Jan 2004 at 8:42, Virden Clark Beckman wrote:

 well. With walky talky power typically around 5
> watts this can be done with 4 cavities instead of the 6 or 7 needed
> for higher power, for the 600kc ham vhf band split this each of these
> could be made from 3 3lb coffee cans

ok this stament is not 100% true 

I run a repeater with 60 watts output and I only run 4 Cans.
wth the 4 Sinclair cans I got over 90db of iso. and to boot if I really 
wanted to get them tighter thay will do a 500 KC split to boot 


so instead of going through the hassle of make'n your own cans .. 
look for a sinclair hybrid duplexer .. you can find these units from 
cheap to free ... and little work will get then where you need them 

All I had to do it tune .. the rods and stubs and was bang on .

Good luck


Rick Szajkowski VA3 RZS
Charlotte Darby VA3 CMR
Node Owners of IRLP Node 2120
Lakefield Ont Canada





 

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