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Here is a link to the YouTube video of Ashhar's talk. As of my first skim through it looks really good. https://www.youtube.com/watch?v=9mFxyS6_2t8 The part about the Arduino as a microphone audio

Yes, if the inductance is low enough the tester will just see it as a resistor. I would need to go back and check some inductors to see where this happens. Offhand I think I had some 1mh chokes that

Curt: NPN tests fine. Ill try straight piece of wire. You Tube videos show inductors testing correctly on some model of this tester. Found a review that also showed low value inductors being seen as

John, Thanks for the pointer to the W6PQL document, Jim definitely knows what he is doing. I've been looking at his stuff longingly for several years now. In that document, all he says about using

James Interesting. I imagine it checks for good npn and pnp? Does it merely id an inductor or measure inductance?? Note that a molded choke might have an ohm or more of resistance, so if it has to

Hello All: I just received the Transistor Tester TC1(Amazon $19) as seen on the latest Ham Nation video(may not be the exact model that was shown). All tests look good except for the inductor test.

*** That's *perfect*. I shall do exactly that. Thanks, John. - Jerry KF6VB

Using the braid as the primary is an interesting trick, but I would probably just strip the outer coating and braid off of the inner wire, use that for both windings. Jerry, Using the braid as the

Neils, There are a few minor mods. Don't get to pcb yet. Gimme another few days.

I removed R70,? then used small shielded cables and a relay to switch my audio filter in and out since it did not had a bypass function. The 2 NC contacts are bridged with a 1k resistor to simulate

Jerry I am thinking it should not matter which lm386 to use at the output. The gain distribution is nicely arranged so the audio filter should work well between the audio amplifiers. Yes keeping RF

Hi I captured the schematics from Ashar Farhans FDIM 2021 presentation "sBITX - An Open-Source SDR the YOU Can Hack!" So I started hacking! Attached is a rendering of my Sbitx board. The x-tals,

Hello All, I just put together a Hi-Per-Mite CW audio filter. Would like to install it in the UBITXv6. Where to break the audio chain? I have the schematic, but no board layout. I'm thinking

That amp uses the IRFZ24N FET, seems a better choice than the IRF510 for 12v operation on 20,40,80m.? Not so good at higher frequencies or higher supply voltages. Compared to the IRF510, it has

John, Thanks for the description. Teflon covered wire is recommended if building a high powered output transformer that might get hot.? But you seem to have solved the hot thing by going to a better

Funny, I was just reading some more of the 6B transmitter manual. On page 23 it talks about needing to fill and maintain the level of the DC filament supply electrolytic capacitor with "capacitor

The "AllStar" RoIP protocol they mention looks interesting. That for dedicated nodes and a WebRTC interface for web browser based control look like a good combination. Tom, wb6b

I have just finished building a version of W6JL's linear. It has fantastic! performance. 40 watts upto 14 Mhz, 30 watts on 21 Mhz with -30 db IMDR. The changes I made were to replace the output

Tom http://www.gronkradio.net/ Arv _._

Seriously, if you want to try hollow-state, look to some of the older ARRL Radio Amateur's Handbooks.? My 1st transmitter was a home-brew effort, starting with a 1625 (the 12-volt version of the 807)