Yes, I agree with everything you said. I also don't understand how 25 ohms could choke out RF from feeding back into the power supply. Lee

What I would like to know is how Leo Meyerson was able to turn a drill press into a lapping machine. As mentioned keeping the sides flat and parallel are key. I could never do it. Could grind maybe 5

My private e-mail got sent to the group by mistake Lee

Didn't really want to post this. Intended for a private e-mail. Got sent bye mistake. Lee

You can buy this for $90 plus shipping or an all band, all mode, 10 watt QRP Labs rig with memory keyer for $150 in November. Lee

OK, thanks Dave. Lee w0vt, w5drc

Here are the Ebay suppliers I am using: https://www.ebay.com/itm/1-10x-Mini-USB-5V-1A-18650-TP4056-Lithium-Battery-Charger-Module-Charging-Board/282805205249?ssPageName=STRK%3AMEBIDX%3AIT&var=58212469

Still need to know the maximum voltage that can be applied to a Hilltopper. (I think I will heat sink the 5 volt regulator or use a bigger one.) I am going to make up battery packs using four 18650 ba

What is the maximum voltage you can safely put into the Hilltopper? (When using 18650 cells the voltage gets a little high when you hook four of these cells together unless you put silicon dropping di

I use a 2.5mH RF choke. Lee, w0vt

Wonderful! Thanks for info, Dave! Lee w0vt, w5drc

What is the frequency range of the Hill Topper 20 transceiver? Lee w0vt, w5drc

I hate Facebook. Leave me out. Endless mindless nonsense. Short bursts of idiocy. Not secure. Also I don't need Birthday greetings, Happy Holiday greetings, and notification your dog took a dump today

For those interested in building a tuned PVC pipe speaker, you might want to look at a 4 ohm 3 watt speaker sold by Marlin P. Jones & Associates. This speaker is 2 inches square. Even though it is 2 i

I don't have a Cricket, but I would think by changing the values of C9 and C10 you could get these Ebay crystals to work nicely. Maybe try raising C10 to 220pf and reducing C9. Maybe put a variable tr

Walter, one more thought. Why don't you contact HRO and maybe some of the other big dealers such as DX Engineering and see if they will stock your CW kit. In the past I have from time to time wanted t

Walter, This is a wonderful idea and kit. We need more hams learning CW. I hope it sells out and you have many runs with it. Lee, w0vt

When grinding crystals it is imperative both planes of the crystal stay parallel. If they don't, it will not oscillate. Beveling the edges help restore activity if the blank becomes sluggish. Grinding

Curt, Clean means "CLEAN". That means no oil on the blank from your fingers. Clean the blank with distilled water and alcohol and just hold the blank on it's edges. Lee, w0vt

Curt, Putting edges on a crystal blank helps improve activity of the blank. Lee, w0vt