The B+W 800 series chokes work well, I have the 800 in my 2x813 rig that does 1.6 to 30 mc just fine. The 800 series choke is just enameled wire close wound on a ceramic form that is about 5/8 inch round.
Later ones might have been wound on plastic forms. They are still around cheap. Any plate choke that will handle the current should work, I never found one that caused problems as long as it did not arc to ground or melt from the current. >From looking in the junk box, it looks like some homebrewers or companies mounted them to close to ground as I have a few that show arcing. Leave plenty of space to ground and all other parts. Brett N2DTS > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Mark W1EOF > Sent: Wednesday, February 21, 2007 10:55 PM > To: Discussion of AM Radio in the Amateur Service > Subject: [AMRadio] WTB: National R-175 plate choke or equiv > > > I need a nice plate choke for my 813x2 amp. I was going to > homebrew one > now I'm thinking that there will be enough variables without > that. I'm > going for operation on all bands 160-10. So I'd rather use a > known good > design plate choke like the National R-175. Anybody got one > for sale or > trade? > > 73, > > > Mark W1EOF > > > ______________________________________________________________ > AMRadio mailing list > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Partner Website: http://www.amfone.net > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:[email protected] > To unsubscribe, send an email to [EMAIL PROTECTED] with > the word unsubscribe in the message body. > ______________________________________________________________ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected] To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
