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This is TRUE ham radio. Dave K8WPE

I like that statement. Was just reading an "authoritative" article repeating the standard "maximum power is transferred when the load matches the transmitter impedance" and that was why you had to

SWR and Wattmeters made for CB are often worthless in the ham bands, unless you're only using 10M. I picked up a Firebird SWR/Wattmeter a while back that was supposed to be good for 1.8-30 MHz. HAR!

rev.01 73

Great Work GLENN! My take, if it works, I'lll add it to my board offerings, say $1, or free with a LPF relay board.... 73 Nick VK4PP

approx. install position. R27 would be removed and short wires fitted. Hole was drilled into main board behind this adapter board.? There are two GND through holes, near R25 and to the right near the

Bill Thanks for the reply. Someone told me how to check the voltages along the circuit path. Found a bad solder joint. (Damn trifocals ain’t as good as young eyes!). Repaired the solder and fixed

Hi Nick, I made a simple single sided PCB for my install, but not installed yet. I used ~0.2mm for the filter side winding (7T)? and ~0.5mm for the Low Z? winding (2T) to give the install a bit of

Dan, a CB swr meter will probably give you an incorrect reading on any band except maybe 15 or 10 meters. A nice, relatively inexpensive new SWR meter is the MFJ-818, correctly constructed for all the

Nothing to be sorry for. This is good info! Marco - KG5PRT wrote:

Kee’s, are you referring to relay K3 that is used to switch M1 and M2. Is that relay on your board now or are you revising your board to include it. Skip Davis, NC9O

HI John, Details please? And the results? Thanks Nick

If I may add to the conversation - my experience of using CB meters is if they're the parallel-strip kind (very common), they may loose some sensitivity at the low end.? Otherwise, they did a fair to

45 Mhz filter installed with impedance matching transformers. PCB made with islands created with a x-acto hobby saw. John KC9OJV

George also modified the main 45MHz filter by adding transformer coupling ...........on?Sep 8???#58971 ( /g/BITX20/message/58971 ) 73 Kees K5BCQ

Warren, my plot of the TOYOCOM 45E2BF filter using your 7 : 2t on BN43-2402 also. Clearly my filters have a different impedance than yours as loss is higher and ultimate rejection worse. But I guess

It looks like great progress is being made on spur reduction, so back to LPF switching and a few other things. Received the first set of boards and have already made some modifications for better

Did Change the output transformer (T11) to 2 FB43-801's like a binoc core ..3 T pri, 5 T sec ..just to start ..The other one was kinda making the waveshape look like a triangle wave generator (lotsa

Just one step at a time ....Did replace R97 and R98 (47 ohm) on the mosfets gates with 10K resistors ...Improved drive and output Now Q90 is going into limiting at -17 dbm...Gotta check/redo the bias

Hello Gordon, Good to hear. I am looking forward to purchasing a few. Ripley The words are mine but this iPad does what it will with them.