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Hi Jim, or Raj, or …. I have trouble with reproducibility on lower numbers with my recently purchased LC200. Butt when I see people that know what they are doing having good results, I'm inclined to

Mike, You asked about the two LPF filters. Here they are pictures and plots. The components used on the small board and the large board are the same and they are both at about 10MHz (same filter

Amazon has the meter and accessories for $119.97. I’ll be picking up that meter off your recommendation. Joe

Wow wow. Okay no wonder I couldn’t hear myself too well on websdrs after the mod. I thought it was just band conditions. I’ll order those coils ASAP!! Thanks Raj for your knowledge as always Joe

... aha ... that is smart done from Ashar . Also the Raduino-Board now is mounted on the backside of the 25 MHz crystal board , not more inside between space of LCD-Board and 25 MHz board , that means

About the possession I guess that a non filtered output shows a higher power, which is the sum of the fundamental, the spurs, harmonics and all the garbage left.

I have my BITX40 up and running. Just got on the air for the first time a month ago. Lots of FT8 contacts and a few other digital contacts. I just put it in a case with a switch for the PA power

Hi Raj, Funny, I have a DE-5000, LC-100A (real cheap one from eBay) and the AADE and they all agree within less than 1 percent. You might have a bad crystal oscillator on the uP in your AADE? Or maybe

Hi Jim, Just wanting to lob out an idea for consideration on your multiple uBITX board relay experiment, if it is still in progress. Mounting the Axicom relays from the back side, where they are

I agree with you Raj. Also, I believe it's because the Axicom relays were designed from the beginning to be used in RF applications where the ones originally used in the uBITX were and are not. The

Just a friendly reminder to tune in to 7.277 or 7.177 for the Sunday Bitx net. Same format as before. Hope to catch you then! Jay WS4JM

2x2 Jens, Gnd+In and Gnd+Out, add your own filter socket. You will have to disable the stock filter! Raj

Anybody knows for what is " P3 " connector on the new board ? (2 x 3 pin , female?, located beside left from the12 mHz filter-crystals) 73 , Jens / HB9JOI

Relays are sealed, cant use SWR grease. I remember reading in QST some year April about how SWR grease makes all the standing waves slip and fall off the antenna :-)) Most of my testing with harmonics

FYI, similar AXICOM relays are mounted on the RF sensed TX/RX switch (changeover) by Kanga. Attached you find the pic of one I assembled some time ago. As this provides RX protection, Kanga has

My guess is that your Panasonic are possessed by some SWR...

Hi Guys, I am awaiting delivery of my uBitX.? Now preparing the case and add-ons (like Frd/Rev power, fan controller, sound card interface, audio power amp, etc). Have been watching the spur /

Kees, My guess is that the contacts being underside are close to the ground plane of the board and that must be helping decreasing the "coupling" of both sets of contacts. Imagine a loop on one side

https://www.component-hk.com/product/TE-Connectivity-Potter%26Brumfield-Relays/V23105A5403A201.html

Info is nice always go by inductance values for tuned circuits as per sch but not mechanical turns wound. If you wind same, needed inductance has to be checked and tweaked. <ab7vf@...>