[AMRadio] need help


Edward B Richards zuu6k at juno.com
Wed Oct 19 01:54:58 EDT 2005


Thanks, Guy. I have not built it yet.

Ed K6UUZ

On Tue, 18 Oct 2005 23:43:35 -0400 "guyq" <guyq at comcast.net> writes:
> How about dropping a swr meter between the rig and the amp. Terminate 
> the
> amp with a 50 ohm load.
> Guy
> ----- Original Message -----
> From: "Edward B Richards" <zuu6k at juno.com>
> To: <amradio at mailman.qth.net>
> Sent: Tuesday, October 18, 2005 11:26 PM
> Subject: [AMRadio] need help
> 
> 
> > Hi, you guys who are better educated than I. I want to drive a 
> linear
> > amplifier with a rice box that requires a 50 ohm load. The linear 
> amp
> > uses an input to a 170 ohm, 80 watt swamping resistor to ground, 
> then
> > through a .001 mfd capacitor, then through a VHF parasitic 
> suppressor
> > consisting of  4 turns of wire around a 47 ohm resistor, to the 
> grids of
> > a pair of parallel connected 4-400A tubes.
> >
> > What I need to know is the impedance of the input. Is it close to 
> 50 ohms
> > or do I need to use a matching network between the rice box and 
> the
> > linear amplifier. Thank you.
> >
> > Ed K6UUZ
> > ______________________________________________________________
> > AMRadio mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/amradio
> > Help: http://mailman.qth.net/mmfaq.html
> > Post: mailto:AMRadio at mailman.qth.net
> > AMfone Website: http://www.amfone.net
> > AM List Admin: Brian Sherrod/w5ami
> 
> ______________________________________________________________
> AMRadio mailing list
> Home: http://mailman.qth.net/mailman/listinfo/amradio
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:AMRadio at mailman.qth.net
> AMfone Website: http://www.amfone.net
> AM List Admin: Brian Sherrod/w5ami
> 
> 



More information about the AMRadio mailing list

This page last updated 18 Oct 2017.