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Allison? re? - substitutes for the OPA2674.? and other important matters Interestingly Mouser lists? most video amps under? High speed operational amp category.? . If you go to? Video

Well taken, Hans. I was talking about how IFTX works in general and the Technical issue is indeed not an issue with your rigs implementation, but with the typical SSB transceivers it can be. Sorry for

I use ’Serial’ by Decisive Tactics. 73, N4TVC, Randy, FM18is

Hello Yury Your order ID is 83360. The package has not been shipped yet. 73 Hans G0UPL http://qrp-labs.com https://www.buymeacoffee.com/g0upl

Hello Hans, Could you do a favor and share a order id for recently sent parcel? I understood the huge backlog you having right now and thus I am sorry for my impatient =) Thanks a lot, Yury

Hi Scotty next is the WARC Party? https://www.qrp-labs.com/qcxwarc.html Martin DK3UW

You can find the dates and schedule here: https://www.qrp-labs.com/party.html 73! Peter DL3NAA

I'd have thought harmonics shouldn't

Allison? - comment on LT 1254 noted. I also have some things to say about the Motorola high power application notes and they aren't all good. I'll write the? out in due course and perhaps save

Down to single digits on the QMX wait list. Seeking a terminal program for Mac OS. All suggestions appreciated! Gene AC4ZY

Doug, there might be? an H topology arrangement in place with 2x 1 K resistors forming the voltage splitter and then two resistors under the PCB forming the other part of? the H which provides a?

It should be mentioned that IFTX takes considerable liberties with the WSJT-X software concept. I did make some contacts with it, but it needs some changes to be truly useful. Operational: The

Which solder joints did you reflow to address the sidetone issue? I’m still having a strong band-dependent ‘knock’ at the end of each character. Wondering if a bad solder joint could be a

Thanks Dan, I have done that and doesn't seem to make much difference. I haven't been able to get back to it yet but I'm inclined to think it's more of a common mode issue. I'll keep you updated.

Also, to rule out the power supply itself, try running on battery power to see if there's a difference. -- 73, Dan - W2DLC

Hi Steve, I suppose I could do that. I did update the ticket with more info at one point and have tried emails but not a single response to any of those. Peter

Given the observations you made, using a common-mode choke on the antenna feedline could be a solution. A common-mode choke can help suppress common-mode noise by preventing it from entering the

It is not my analysis beyond eyeball.? Not a debate for me. Unterminated transformer has a reflected condition that with dependencies will be reactive and op amps dislike reactive loads. Adding

These kits are, of course, legal, as the K3NG code is free and open source. But it's equally true that the sellers of these kits are required to make any changes that they make to the code publicly

Martin, Check L503 to see If it has been damaged ( open circuit). JZ KJ4A