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1. [Amps] Re: 160M efficiency (score: 1): Author: peter.chadwick at Zarlink.Com (peter.chadwick@Zarlink.Com); Date: Mon Jun 2 08:07:43 2003; So how did we get reasonable efficiency in plate modulated 160m PA stages, where we couldn't use a value as big as .01 uf to bypass the end of plate feed RF choke without serious effects on the modul; /archives//html/Amps/2003-06/msg00005.html (7,094 bytes)
2. [Amps] Re: 160M efficiency (score: 1): Author: K1LE at ARRL.NET (Jeffrey Madore); Date: Tue Jun 3 08:32:45 2003; I need a little help in understanding the entire picture correctly. I see that having additional bypass C at the plate choke base, would help prevent the power supply from becoming part of the tuned; /archives//html/Amps/2003-06/msg00006.html (9,049 bytes)
3. [Amps] Re: 160M efficiency (score: 1): Author: philk5pc at tyler.net (Phil Clements); Date: Tue Jun 3 08:32:52 2003; So how did we get reasonable efficiency in plate modulated 160m PA stages, It was, indeed, Peter. Even the National R-175 chokes found on Johnson and many other amps, including many H.B. projects all; /archives//html/Amps/2003-06/msg00012.html (7,945 bytes)
4. [Amps] Re: 160M efficiency (score: 1): Author: 2 at vc.net (2); Date: Tue Jun 3 19:31:40 2003; ** The rub is that power supply components don't do well with RF. The antenna is probably a better place to put RF. ** Current is not lost in a C or an L because only the voltage/current phase relat; /archives//html/Amps/2003-06/msg00017.html (10,416 bytes)
5. [Amps] Re: 160M efficiency (score: 1): Author: no9z at soltec.net (Lynn); Date: Wed May 28 09:31:15 2003; I had a problem with efficiency on 160M on a newly constructed amp. (yc 156) I want to thank all those who responded both on the reflector and privately. Symptoms were: Tank appears resonant on 160M; /archives//html/Amps/2003-05/msg00212.html (6,831 bytes)
6. [Amps] Re: 160M efficiency (score: 1): Author: philk5pc at tyler.net (Phil Clements); Date: Thu May 29 09:34:58 2003; All 160 meter amps need this, Lynn. It is just not as obvious at low power. You need 8000-10000 pf at the base of the plate choke for 160, especially if you are using a string of electrolytic capaci; /archives//html/Amps/2003-05/msg00222.html (6,836 bytes)
7. [Amps] Re: 160M efficiency (score: 1): Author: 2 at vc.net (2); Date: Fri May 30 08:54:17 2003; ? Amen, Phil. Ameritron's 1000pF of +HV bypass C is clearly not good engineering practice below 10MHz.. Rich, AG6K, 805-386-3734, www.vcnet.com/measures; /archives//html/Amps/2003-05/msg00227.html (7,357 bytes)

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