All you builders, engineers, designers and like me, a tinkerer, I have a question on winding a binocular core. Most articles describe one turn as a single pass of wire up one side of the core and down

Hey Jack! You got a bite! http://www.arrl.org/shop/Microcontroller-Projects-for-Amateur-Radio/ Speaking of books, I'd recommend EMRFD, if you can get a copy. Fantastic book, going out of print, no lon

At least one scratch builder used a reflow oven. While he was a EE student with unique needs, I don't see a huge difference in obtaining an assembled board, its still ripe for mods. If you want a buil

Jeremy, also, there are these boards that are available: https://amateurradiokits.in/store/printed-circuit-boards/ They are not true HFSignals boards. the design is different. 73 Evan AC9TU

Jeremy, There are at least 2 scratch-built µBITX that I am aware of from postings on this board. Here is one of the threads from Gerard who has built a board from scratch: https://groups.io/g/BITX20/m

Pacific Antennas purchased the whole company and product line from QRPKits (KI6DS, Doug Hendricks) about 3 years ago and has had the BITX20 kit marked as Out-of-Stock since that time. Due to the long

Hi, I must have lost track of your earlier comments, sorry about that. The intent of this project was to remote a transceiver (any transceiver, not especially the µBITX, but the latter proved to be a

#firmware #raduino #ubitxv6 #v6

Nice details. Agree. Also, it is like garbage in, garbage out, like the term in computer programming. For example, when uBITX complaints of receiving AM stations, then rejection, etc, etc, on top ampl

There is a version of BITX for 20 and 17 which is marketed by Pacific Antenna. However, they have it listed as "out of stock" but it will become available. This is probably more for reference than any

Jeremy To the best of my knowledge, Farhan has not sold bare PC boards for the uBITX series. Earlier BITX series transceiver can be purchased in bare board, or board-plus-parts kits. Some of these are

RST signal reporting (Readability, Strength, and Tone) are not the same as S-unit power levels. RST reports are subjective, while if the receive station has AGC enabled, the level of his/her received

>One thing I forgot to mention, the IRF530s are 100V devices, so you must operate at no more then 1/2 that voltage, or 50 > >volts. You really want more margin, which I why I am using 36 volts. Hi How

Howard, The tone spacing does not change the maths at all. Whether the tones are 100 khz apart or 1 khz apart, the IMD3 will still move up or down 3 times faster than the tones. Using tones that are 1

He tests for IMD using the gear he has, he can't split two audio tones. Should catch most of it. Jerry, KE7ER

Reg: One thing I forgot to mention, the IRF530s are 100V devices, so you must operate at no more then 1/2 that voltage, or 50 volts. You really want more margin, which I why I am using 36 volts. Howar

Reg: I bought several of those amps. The last 2 came with transistors with the markings removed, so who knows what I got. I built them with real IRF530s. To fix the input impedance, I put a 5 ohm 2 wa

Hello I have a ver5 with the KD8CEC software installed. Fun radio great software. When you change from one band to another is there a way to change the starting freq? I searched the list but only foun

>Power is the strength of the RF being sent out there to fight conditions and more. >So, in math, it may be equal to 1 S unit, but in the readings of each radio meter, S units are more or less sensiti

I would like to thank both Bob and Ashar for their thoughtful replies. I ended up liking the IRF530s because they are cheap. If you make a mistake and blow them up, it is not a big deal. I have blown

p.s. is the optimal core material and form for T11 still “a BN43-202 binocular core” ?