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What is time time/freq for the Drake net today?

"Craig W8CS via groups.io" <craig_severson@...> wrote: If your whine is around 23 KHz then yes, it is C2108. This can also show up as 23 KHz spurs in both RX and TX signals. I had one

Hi David, Thank you for your response. Do you have either the 2-AQ or 2-BQ Q-Multiplier parts I would be interested in the Q-Multiplier complete chassis and interconnecting cable. There is no

I've been working the TR-7A hard during this weekend's ARRL CW DX contest, and I'm picking up a very high-pitched hash/whine in the headphones now. I'm assuming that it's the infamous C2108 cap which

Jake; As promised, here's the simplified schematic of the L4-B RF Deck, with the ESL4-4B mod installed. Only one of the 3-500Zs is shown. The DC Plate Current path is from the "HV" terminal to the "HV

Let me know if you need parts as I have a large selection of new Drake parts for the 2B. David Assaf III W5XU VP8RXU [email protected]> wrote:

Jake; I’m away from home right now, but I made a simplified schematic of the RF Deck with the ESL4-4B mod installed, that I believe will make all things clear to you. I’ll send it to you when I

Well so far I've resoldered the tube pins, grounded the grids directly with strap, tightened the tube socket springs,? I? assembled and installed the Harbach kit in the power supply, did the 10

I was given a Drake 2B receiver that works okay. I performed the 2B rcvr alignment steps that went okay. I picked up a 2-AQ Q-Multiplier on eBay but it didn't appear to work. I found the Q-Multi

So, if I unsolder the yellow CT wire and measure the voltage on it to the chassis ground, should I show the voltage, or is there another part in the circuit that I must find to complete it to see the

Jake; The 3-500Z has the filament and cathode combined into one physical structure. To keep currents balanced across this combined structure throughout the AC cycle of filament-heating current, it is

Well, when I connected my audio-generator to R128, to check the audio amplification, I noticed that R137 was ->VERY<- hot. The result of a voltage measurement on the leg of R137 towards C173 etc.

That would be the Drake equivalent of the old "put a penny in the fuse box" trick. "Mark N9EA via groups.io" <markn9ea@...> wrote: -- 73 -Jim NU0C

I’m surprised you didn’t get a lot of smoke and odour from that tantalum cap. In the day, tantalum caps were much smaller than their electrolytic counterparts. Today, using an electrolytic cap is

Whew - I skimmed through the first of that, and thought you had found a live snake - thankfully not poisonous :). - Jerry, KF6VB

Thanks?

I thought this group would appreciate this photo of my amp project. If that .82 ohm HV resistor gives you problems, just add a pc of 12ga THHN. Mark N9EA [email protected]> wrote:

jerry-KF6VB writes: Don't dismiss low voltage DC. Many lifetimes ago when I was running audio cables up eight floors of conduit, I sent a snake down from the floor above. Unbeknownst to me, a panel on

*** Not in mine. 55V is all you get. I've been meaning to put a power switch on the RF deck - running off 12V, with a beefy 12V relay in the power supply. Right now, I switch the power supply on by

But isn't the center tap yellow wire different from the filament taps in the transformer?