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Use a multiple of 50 with and additive amount of watts.?Put them in parallel and you'll have 50 ohms at 10 watts. Example: 5 times 50 = 250 ohms each, 5 times 2 watts each equals 10 watts.Example: 20

That's great Dennis! Thanks for the info.? I'm your neighbor up in Horseheads.? I ordered mine on December 29th, so let's see when I get the notice. -Daniel, W2DLC

Freescale Semiconductor: "The MRFE6VP61K25H/HS delivers 1250 W CW output power at 50V, after surviving a 65:1 VSWR, and is operable from 1.8 MHz up to 600 MHz." OMG that's incredible. got to be

Thank you very much. I have ordered the parts and will build this to add to my ubitx. I think this will supply power to the PA power wire on the power connector.? Is this correct? Do I need to do

Thank you Don, your blog is a treasure trove, you are a fine artist as well. The last time I saw an illustration like this, was in a 19th century sciense book: Question: how can I make up a 50 Ohm

BTW, could we keep this thread focused on using the RD16HHF1 discussion and move the SMD/SMT discussion to a new thread? Thanks for the great measurements on the pre-drivers, Glenn.? Makes it clear

What about replacing RV1 with an AD5246, and an SWR bridge to monitor output power and then a PID loop to adjust drive level to attain desired output...

Allison, thanks for the insights. Much appreciated. I noticed that the push-pull IRF510's performed much better in simulation using the WA2EBY output transformer scheme? than with the stock uBitx

SUBTRACT A FEW PARTS AND A POT AND IT IS CONSTANTLY VARIABLE ADD ASC712 TO MONITOR CURRENT AND A VOLTAGE DIVIDER TO SEE WHATs GOING WITH REALTIME DETAIL. DAVE Ihate caps lock

Doesn't matter if psu connects to ammeter black or red, will likely read with a minus sign if you put the black ammeter probe on the PSU. I suggest you measure PA current separately, since I think

Thank you Eric, I was soooo affraid to tackle any smd involved task until now, but you gave me the needed insite and enouragement, I feel, I could do it now. 73! George VE7WQ Wednesday, February

There seems to be a belief that the IRF5xx parts have no capability at VHF... I have an amp using 8 of them at 32V that puts out a mere 210W at 50mhz.? All of the parts are IRF510s in a 4x4 push

I finally got my uBitx calibrated to my satisfaction but I still think there is room for some improvement there. Now waiting for my case to arrive and I can finish it up. So far very happy with

OK Group. Here is how it is looking: I have placed the order! 20 x RadionoI2C boards, 300 x HPF boards 300 x LPF boards 60 x Audio breakout boards. I will build and test 2 boards: 1 for my own use

Hey Thanx Tom! Pretty amazing that it gets here so quickly. On this end the wait continues.. ordered on 1/13 so my uBitx is still at least a few weeks away. Nice to see all the activity of

I found the link but just missed the video. Found it now. Thanks. Yep. That’s exactly why I requested the call. Mike K5ESS Sent: Wednesday, February 21, 2018 3:35 PM To:

Should I be measuring pa current or both? E.g. both wires from psu to black probe and 2 wires running of red probe to each input?

Yeah, a pound of Kester last month was $25.10 + $7 shipping. Vince.

He is not selling supplies anymore. This is where he suggest getting supplies.? CML Supply.? They got lots of good stuff and the prices look good. Have you bought a pound of solder lately! I am

link to rotary switches, and all other parts:?https://www.taydaelectronics.com/electromechanical/switches-key-pad/rotary-switch.html