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Here's a Mouser search for stuff with Vce of 12v+, Ic of 600ma+, Ft of 300+: ?

Finals, PA-PWR, output devices... the same. The other is rest of rig. PLEASE, put the fuses before the polarity protect diode.? Example Fuse, reverse polarity protection diode, radio. Allison

The "Fix reverse polarity" section on ubitx.net suggests a 0.5A fuse for the "rig" and 2A fuse for the "finals," but does not specify which wire is which.? The schematic says that the brown wire is

In the old parts box I have Ck722s, 2n107, a few SB100,? 3n35 and 36(tetrodes!) and the first JFETs (GM almost 900uS, modern parts like J310 are about 20,000) also a pot load of the?early computer

What's absolutely astounding is that it's still a good choice. The 2n2222a has slightly better specs than the original 2n2222, but not by much. Jerry

I forgot the speaker's name, but at the FDIM conference this year, he referred to the 2N2222 as the "cockroach of transistors". Jack, W8TEE

It was notable as it wasn't germanium and could handle a bit of power too. By then I'd already blown up a few 2n107s, 2n170s and anything else I could scrounge and others trying to get audio gain and

yes Tim i am trying to do what your saying

Yup, almost as oldie as me. From? ? ??http://semiconductormuseum.com/Museum_Index.htm " Since its initial product launch by Motorola at the 1962 IRE Convention, the 2N2222 has become the most

As I have said, some of this can be counter-intuitive. There's a lot going on.<<< The weirdest I'd seen is as the audio drive came up the spur? would drop then rise and drop again before hitting the

ok so im not trying to change the componet vavles im just trying to shift the if frequency a bit say 200 to 600 hz so it doesnt sound like a 1.8khz filter but more like a 2.2khz to a 2.4 khz filter i

Probably an R shape tip https://www.hakko.com/english/tip_selection/series_900m.html#type_r ? -- www.bitxmap.com ( http://www.bitxmap.com )

Well had a actually followed the directions, and not had the raduino plugged in, everything would have been just fine. I'm reading 0.091a, which is what the directions said I should be reading. THANK

Jerry, Yes, 2n2222A are an oldie.? Ih 100 piece price range they get well under a buck. True of a lot of parts. For farhan its larger lotts a 50 board run that would be 300 2n2222a and a 500 peice or

That is probably it if the Radino is plugged into the main board as the "key" logic circuit will float and cause the transmitter to be keyed, off and on without the resistor. If that solves your

Leave out the resistor and it thinks you doing CW with a brick on the key. Allison

Where did you find that tip? 73 Bill WA8VIH/4

Mike, These simple circuits are rife with subtleties. No real benefit in using higher voltage when there is an easy access to the 5 volts from the Raduino. I don't understand why a voltage trace needs

ajparent1/KB1GMX ( /g/BITX20/profile/383014 ) 10:34 am???#51528??( /g/BITX20/message/51528 ) I swept mine, same deal.? About 1750hz wide which for SSB is a bit

Thank you for the quick response Rick! So, you really think that's it huh? And what you're saying is the wire-up directions should be modified to include this caveat. Thank you again! --Jim <insert