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Wow... nice! Well then, sorry for the long dissertation on power systems... *:-/* But yes, the jumper trick works perfectly. Super-easy with no permanent mod's to the amp. And, you can properly ground

I was considering the modification you suggested.......and also wondering about the design choices made by Henry. ....retired EE that paid for tuition as an electrician.... It was a powerful

There is nothing to "isolate", with respect to the neutral and grounding systems, within the amplifier. They are not inter-connected in any way; the amp is NOT grounded by the green wire. The "green"

Hello Eric, Sorry, I'm a little late to the party on this one, however I will inject my 2-cents worth... I have a few Henry amp's (four, to be exact) as well as several other brands & models (i like

well, it should be obvious some CB'er tried to make it work on 27megs. I note one inductor looks un connected on the loading side as if someone had it configured as a Pi-L at some point? Meanwhile I

Typ overall ( OUTPUT ) network Q in an amplifier is 12.? ( input Q of 10..and an output Q of 2).? Typ that Q is used so the harmonic suppression is good.? Lower Q = less harmonic suppression. On a

The plate load Z of the tube is fixed.? ? The 50 ohm output is fixed.? ?The PI net just matches the plate load Z to 50 ohms.? ?Knowing the typ load Q you want, the rest is easy....... as you can

Continuing on the subj of plate chokes, since that is what the worst linear pic triggered me on And incidentally its customary to tie the plate(s) of the tube to the top of the rfc, with the top cover

I was wondering if multiple plate chokes would take care of the series resonance problems across HF spectrum....and it sounds like this is is the case.. Eric WB6TIX

Hi Jim, Small roller coils are available at Dr.Alex UR4LL in Ukraine. "small roller coil" is about 4?H, "compact roller coil" about 2?H. Great for input circuits of GG amps.

That Pentalab data sheet on DXE's? site is incorrect for airflow....(3CX-3000A7) .? ? It's? 67 cfm @ 1.2"? for 4 kw CCS anode diss......and that's for 40 C (104F) intake air temp.? If the actual

Some possibly demented thoughts...... In (nearly) all cases, if the frequency of operation, and impedances at both sides of the matching network are known, the needed component values in the network

Well that would work! Bob W4JFA [email protected]> wrote:

Two plate RF chokes in series were used in the homebrew 4-1000A amplifier that I designed and built in the early 80's and is still in reliable service at my 4X4NJ station. At the time, I didn't have

Yes, I remember this exact situation when I was growing up in the 50s. The solution my father had was to not touch the stove and refrigerator at the same time.

Jim, A possibility I was thinking was if there's an open neutral then the ground now becomes a current carrier. If the ground potential is different between the fridge and the stove, current flows, a

That amp uses a PI-L output for the 11m tank.? ? The vertical plate choke has the B+ fed to the top of it....and existing the bottom. 56 pounds sterling = $72.00? US dollars.? ?You could get it

The 4 x burners on top of the electric stove all run on 120 vac....and still do.? ?One big and one small? burner each run on 120 vac....and are on 1 side of the buss.? ? ?The 2nd big and? 2nd

There was a hood light and a hood fan. The oven didn't have a light. The 'fridge had a light. At the time I was very immersed in Mars Observer and was just glad the LL family treated me like family

From the looks of it, it appears the amp is only for 11 meters. With the small inductors and the caps missing plates, I bet it was designed with CB in mind. I also do not think that it has ever been