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He didn’t, Mike. He said “playing dumb”. Not the same thing at all ! Good to see passion is not dead around amplifiers.

If it's shipped freight, it likely is dropshipped directly from the factory (Hammond). Mine was. Steve, K0XP -- See my QRZ.com page at *https://www.qrz.com/db/K0XP*

Hmmm, interesting... The two I ordered (although back in 2020/2021) both drop-shipped direct to me in Texas, from Hammond in Canada) -- 73, ~Alan

We really don't need people being called dumb.

Keep playing dumb Correction (calculations)auto correct

Whats your problem? I don?t know what you mean with Carla. This thread is about Pi-L networks, not about anything you do. 73 -----Original-Nachricht----- Betreff: Re: [ham-amplifiers] High

The site jim uses provided the input and output network Carla’s for the 3x6 10kw pa and were dead nuts on. Has also been used for more pa’s then I can count in the past. Peter I’m starting to

Good day Group., Well Jim and Peter I've extrapolated the 350 and 90 pf values with Peter's frequencies for the C1 values, which show that Peter's value for the Q1 on GM3SEK's spreadsheet is

Hi Jim, I use the formulas by Eimac and also the PIEL software depending on what computer I use. My values for the anode capacitors are the total values. Any strays and tube capacitance etc. as well

On Sat, Mar 9, 2024 at 10:46 PM, Peter Voelpel wrote: > > > > Sorry Jim, > > > > > > > > I can?t follow your calculations and for what reason a Q of <8 should not > be possible on 40m. > > > > > > >

Sorry Jim, I can?t follow your calculations and for what reason a Q of <8 should not be possible on 40m. Lets assume a YC179 with 6kV on the anode and 2.75A anode current. Tube output impedance will

##? Nice try....still does not work on 40-10m. On 40m, min overall network Q that can be used with a PI-L? is? 8? ? (This is all based on having the MIN C1 being at least 14 pf). On 30m, min Q

Here the complex chain drive is finalized. Spur gears used on the inside of the inner front panel. The idea of the 3 x chains is to get the tune + load turns counters, and the bandswitch knob located

As already mentioned, the physical size of L and C is meant with smaller of course. And a Q of 5-6 with Pi-L is sufficient where 9 with a simple Pi might not be sufficient for harmonic supression.

## Not quite.? In software, or in Orr's books, on any PI-L,? BOTH the C1 and C2 caps are a lot lower value, BUT the main Coil ('L1')? is one helluva lot bigger in value. Coil has to be a lot bigger

Pi-L is great. Not only the capacitors become smaller in size also the coils and band switch can be made much smaller with that far lower current through them. 73 Peter -----Original-Nachricht-----

Great Info Jim, I thought the main purpose of a Pi-L is to use a smaller C2?? ? If you have that L then C2 goes way down in value. On the Henry you need to make absolutely sure that L is tuned

Jeez, I love your sob stories, Jim !!! What a read. You should write a small book – a little like the “Care and Feeding” thing from Eimac. All of us amp geeks would love it. Sent: Thursday,

On a side note, on these hb amps,? I design the PI net in software...but I also use a LOT lower loaded Q.? (I gave up on the PI-L...major pita.? The PI-L config uses a LOT more L1 coil between the

Sounds about right. I will measure the IMD just for fun. For 10 meters it has a fixed tune cap so you only need to set the load to about 80. If you leave that alone, You can switch 10, 15,20,40 and 80