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1. [Amps] Alpha 77 160 meter plate choke (score: 1): Author: Tree <tree@kkn.net>; Date: Mon, 24 Mar 2014 11:17:59 -0700; All - I have made a mod to my Alpha 77 to add about 60 uH to the RF plate choke when on 160 meters. I originally was going to mount a switch to control a HV relay - but came up with a better solution; /archives//html/Amps/2014-03/msg00138.html (6,974 bytes)
2. Re: [Amps] Alpha 77 160 meter plate choke (score: 1): Author: "Hardy Landskov" <n7rt@cox.net>; Date: Mon, 24 Mar 2014 13:43:44 -0700; Tree, The choke that's used in the Ameritron is another excellent replacement. It was designed by W8JI. It has double the inductance on 160 so you don't need as much tuning cap to achieve resonance.; /archives//html/Amps/2014-03/msg00140.html (8,632 bytes)
3. Re: [Amps] Alpha 77 160 meter plate choke (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Mon, 24 Mar 2014 16:46:03 -0400; Tree, You may want to check for any in-band resonances if you haven't already. In my 77Dx, I've also added additional C from +HV to ground. For the upcoming 77D project, the plan is to discard the B&; /archives//html/Amps/2014-03/msg00141.html (9,063 bytes)
4. Re: [Amps] Alpha 77 160 meter plate choke (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Mon, 24 Mar 2014 21:04:56 -0400; The RFP RFC-3 is the Ameritron for $5 more The 77DX started with the B&W 800 and then the 801 to improve 160 once people started getting serious about the band. Later the 802 was used by many to allo; /archives//html/Amps/2014-03/msg00145.html (10,756 bytes)

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