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Except being a tetrode with same anode dissipation there is nothing equivalent 73 Peter ________________________________ From: ham_amplifiers@... [mailto:ham_amplifiers@...] On

The AL-80A manual can be downloaded from <http://bama.sbc.edu/ameritro.htm> or a paper copy can be obtained directly from Ameritron. pentalab wrote: The schematic shows padding C1 on 160 meters only

bandswitches with suppressors c. either using ### Owner's can avoid the parasitic problem altogether by simply removing the 2 x rf chokes from the gid pins... plus the 6 x 200 pf caps from the same

##### Rich.... do they actually pad the C1 tune cap on 160 + 80m on a AL-80 B ??? I can understand maybe padding the C1 cap on 160m... but not 80m. ### I think they pull the same stunt on the TL-922

Hi, Frank As I understand it, the GU-95B is equivalent to the 5cx5000A / 8170. The hurdle for a 4cx5000A in AB1 is the grid/Bruene-bridge neutralization circuitry. This subject is covered on:

Hi all: There are several GU-95B available on ebay - I am about to decide to buy one if these to upgrade to > 6 kW out. I have been looking on the net for a datasheet but have been unable to find one.

? As I understand it, Trio-Kenwood has stopped selling bandswitches for the TL-922. The stock TL-922 uses VHF parasitic suppressors with a Q of c. 5.5 @ 100MHz. Since the the TL-922's original

Hi, Vernon --- I would: 1. remove the tube. 2. measure the filament/grid BDV with a high pot. <5kV is not okay. 3. fire the amp up without the tube and make sure the HV is normal. 4. check the meter

I meant to send this earlier. I hope everyone had a very Merry Christmas and wishing you a Happy new Year. Many thanks for the help in 2006. Garry - WR4R

I need a clear, crisp copy of the schematic for an AL80-A. It is dead and I am going to attempot a fix. Any help will be appreciated.

For My Liberal Friends: "Please accept with no obligation, implied or implicit, our best wishes for an environmentally conscious, socially responsible, low-stress, non-addictive, gender-neutral

Seasons Greetings to all from the land down under. Hope Santa leaves plenty of goodies for all. VK4HR

Occasionally this amplifier will show no grid current with drive present. As drive is increased the plate voltage drops in a linear manner. With no RF drive present plate voltage is normal at about

Have all of you a happy Christmas, and my sincere wishes for a very good 2007. I also wish to thank you for the assistance. With best regards Guillermo - LU8EYW.

the RF drive. ### The IMD from ur HT-33/37 is gonna be horendous as is..negating any advantage of the tetrode linear behind it. BTW... a yaesu MK- V.. properly tweaked in analog ESSB mode [not dsp

Adding zeners is easy. What type of rectifier config.? –220V will cut one off.

I saw that Steve. Very impressive. However, I think its neat what you can do when you have the right equipment to perform the job. I guess Phillips was pretty instrumental in providing the necessary

The making of a DeForest triode in 2006 http://www.youtube.com/watch?v=8_eLO0exato Steve (((WG7K))) Tucson, AZ --------------------------------- Want to start your own business? Learn how on Yahoo!

All boat anchors here. Either a Hallicrafters HT-32B or Johnson Invader 200 will be used. David

What kind of exciter are you using? Jim SM2EKM ------------- David C. Hallam wrote: