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I believe there are some images missing from the document?

Wow 940pf. ?You can design for it to work at 30 MHz but thats not gonna work at 3.5 or 7.0 MHz without switching parts in and out. ? ? *Dr.?* *William J. Schmidt - K9HZ *

I haven't seen a lot of flames here regarding imprecise measurements. If you have the Harbor Freight digital voltmeter (often free with any purchase), you are about as well armed as most folks here in

Allison, I tested at 10 meters and output was a dismal 5.47w.? I also changed the pre-driver to a 2N2219 and paralleled resistor R 88? 22 ohm with a 10 ohm.? There was no difference in performance

BITX QSO Afternoon/Evening, Sunday, May 20, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere. Join us as we make contacts from BITX40 to BITX40 on 7.277 MHz in 40 meters! This is a

Roxie, You forgot us who also like to play with the radio hardware.... ;-) The idea of a split is usually bad as the hardware/software do not see the user issues and maybe the user gets to see what

Here is a link to a Raduino replacement at easyeda.com https://easyeda.com/nikpolini/Raduino-1b3e0cb579154514ad2e014b83346b58 You can down load the Gerber files and possibly import to your CAD

I got the bitx40 as an interm radio while by ubitx was still over in India.? Between the two I have made contacts with SSB in 40 US states as well as Ontario. A couple of weeks ago I put in the

Rogier, I just went though that with a box of Arduino Pro Minis I just got. It drove me nuts until I tried programming it using the Demilove, finally the IDE recognized it and the trivial blink the on

Very nice indeed. Thanks for posting. Joel N6ALT

Rogier The Raduino uses an Arduino NANO as the processor. This means that you can use a suitable USB cable and all the Arduino NANO programming tools to write and install firmware to the

Thanks, meantime I figured out that I needed a special USB driver for the Mac in order to connect to the arduino and now its showing.

Mr David Todd, Yes, I agree 100% with you and I can add to that. I operate 80% CW and 20% otherwise.? I do a U turn regarding Bickering.? I enjoy the educational aspect regarding a few Forums here

Ludo It is done. Arv K7HKL _._ wrote:

Easiest to just clip all the pins to remove the old nano, then extract the pins one by one using a soldering iron and needle nose pliers.

You know, I’d love to see the uBITx as a kit.? In fact, I’d take it as just a bag of parts and a circuit board… skip the assembly and testing.? I’d do that myself.? What that would do is

No the power transformer T11. The ?BN61-002 shows lower loss than the BN43 equivalent.??It’s 1:2.? I’m gonna try to cap couple it so it doesn’t carry the DC as soon as my iron heats up.?

Yes it is.? But then you get what you pay for. *Dr. William J. Schmidt - K9HZ*? *From:* [email protected] [mailto:[email protected]] *On Behalf Of* Nick VK4PLN *Sent:* Thursday, May 17, 2018 12:43 AM

Think of it this way… if you spent $9 US on a pair of RD16HHF1 FETS… then what’s another $6.50 US to bring them to full life?? Save the 202 for the choke. ? *?* *Dr. William J. Schmidt -

I use RD16HHF1s… I think you will find that the BN61-002 wound 1:2 runs cool. ? *?* *Dr. William J. Schmidt - K9HZ *? *From:* [email protected] [mailto:[email protected]] *On Behalf Of* Skip Davis