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thanks, Frank R. L. Measures, AG6K, 805.386.3734 r@..., rlm@..., www.somis.org

** In 50-yrs of Hamming, I have had one case of electrolytics tha

** What is this obvious problem?

Home Depot sells copper flashing by the foot. I think it is about 1 foot wide. pentalab <jim.thomson@...> wrote: --- In ham_amplifiers@..., R L Measures <r@...> wrote: are why both

are why both RICH SEZ... The VHF suppressors in the SB-220, AL-82, and the TL- 922 have a Q of 4.5 to 5.5 at 100MHz,and all have a reputation for squirreliness. If direct-grounding the grids is the

would look for a shorted diode or diodes in the power supply. are not protected from AC by reverse diodes, the electrolytics are DOA. ### agreed. Which is why I always install at least one reverse

If a HV rectifier diode shorts, and the electrolytics are not protected from AC by reverse diodes, the electrolytics are DOA. R. L. Measures, AG6K, 805.386.3734 r@..., rlm@...,

Probably. With the tube in or out? R. L. Measures, AG6K, 805.386.3734 r@..., rlm@..., www.somis.org

I'm not familiar with this amp, but a good guess is that I would look for a shorted diode or diodes in the power supply. 73, Mike, W5UC

pf x RICH SEZ... According to my dipmeter, directly-grounding a 3-500Zs grid pins makes little difference in the grid's resonant frequency. #### The AL-82...and it's little bastard brother.. the

The problem at this time is that the amp takes out the 10 amp fuses when I turn it on. High voltage problem?

Sorry, Jim. My mistake. The 922 uses Tune-C padders on 160m and 80m.

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.