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Jerry and pals, I forgot to mention that I switched off the VFO by shorting out the 2pin connector in the middle of the board. Then I fed my sig-gen at +17dbm into the mixer toroid. And all the ghost

Simply copy and paste to a new document and rename it whatever.ino. v/r Fred W4JLE Sent: Tuesday, March 14, 2017 7:10 AM To: [email protected] Subject: Re: [BITX20] MAR-3SM+ and new

I have my board from Qrpguys, and most of the parts should arrive from China in 7-45 days. This is more fun than I've had in years! Thanks Doc.

I’m looking at the VFO (Raduino) output (not connected to mixer) and the 4th Harmonic is about 33 db down from the main bang. A low pass filter might be worth a try, but moving the VFO to 19 seems

Raj, As in post ??/g/BITX20/message/21997 ( /g/BITX20/message/21997 ) Best bet is to move the VFO up to 19mhz, one of Allison's primary criticisms of the Bitx.

Hi! Raj and others, I feel that the mixer is being bit overdriven in transmit, this might result in some spurii... EMRFD suggests a level of -10dbm at the transmixer however calculating the stage gain

Some typos crept in! At 14-03-2017, you wrote:

I was getting bugged by some squawking around 7.145 and got to looking around. The audio matched with a station on 7.385 from Chennai. It was annoying loud and present on my commercial rig. Here is

The board is being sold by QRPGuys.com. Both of us have been caught off-guard by the response, as they sold out of the first shipment of 50 units in 2 days. I sent them another 50 yesterday, but you

Hi Jack ; Love your work on this analyser, A couple of questions on it; 1/. Is the sketch available online to avoid typing it in manually from the docs? 2/. Is the original PCB for your antenna

Thans Jack, Is there a copy of the sketch online to save us typing it in manually and getting a lot of error?

juanjo, you can go to "edit subscription" and manage from there. all the best

stop To: [email protected] Sent: Tuesday, March 14, 2017 11:02:07 AM Subject: [BITX20] Crystal filter bandwidth Hello all, I am a long time lurker from the mediterranean coast of Spain (EA5

Hello all, I am a long time lurker from the mediterranean coast of Spain (EA5 area) near Valencia and I want to share a thougth. Seeing videos by Peter Parker VK3YE it can be seen the filter is quite

The kits I got came with a ceramic disc cap for what you're describing but this is a second cap still attached to the tape reel but cut off individually. Both kits I ordered included it. Both invoice

Re: " It sounds like this:" Video.MOV sounds like extreme broadband interference as from a grow-light ballast, Vedeo-1.MOV sounds like narrowband interference as from a switch mode power

The "hot regulator" is normal but not good! One of the best mods you can make to your Bitx40, is to attach that regulator to a heat sink! Either a pre-molded aluminum heat sink, or attach it to a

Emacs!

Let the inductor and capacitor filter be close to fan rather than on the pcb. We need to bypass the noise at the origin itself.You may use 470uF and 0.1 as a filter set. Sarma

This came up a couple months ago, but I can't find that post. ?There is a file with the old wiring instructions up on hfsigs.com, but you need to know the complete URL of that file in order to find