[AMRadio] Subj change - HB designs


Jim Wilhite w5jo at brightok.net
Tue Jul 24 19:29:32 EDT 2007


You are right Tony.  Why do 3 or 4 of them requiring a lot 
of filament current when one could use one 4-250 or 4-400 or 
even two 4-125s.

One 4-65 will only give 100 watts out in ideal circumstances 
if run full bore.  Might as well have a DX 100.

Jim/W5JO

----- Original Message ----- 
From: "Anthony W. DePrato WA4JQS"



>
> THE 4-65'S are low power rf tubes
> 73 Tony
>
>
> Anthony W. DePrato  WA4JQS
> QCWA  # 23602   10X # 3621
> A1-OP FISTS # 10573  VBA # 55 AMI # 1274
> NCDXF # 1036 RNARS # 1309 SKCC # 1227
> DXCC PHONE DXCC RTTY DXCC CW
> Lis. 1962 Calls Held
>  VP8BZL VP8SSI 3Y0PI V31SS ZD8JQS
>  WA4JQS/ZS1 WA4JQS/4K1 WA4JQS/KC4
>



More information about the AMRadio mailing list

This page last updated 11 Dec 2017.