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It is possible to cover the whole 40m band using a multi-turn pot. The only thing you need to do is to increase the step size from 1,000 to 10,000. This is easily done with 100x oversampling. A small

It does key up when the PTT is pressed. ? I wanted to use a microphone that was pretty much prebuilt, and would allow for the BITX condenser. ? I have yet to make a contact on it, because I don't

Of course possible by new software. Farhan has intended innovation of multiple parameters like slow fast , and auto tune facilities in one single pot. if some of us feel it as a trouble , we can

Try looking at this thread: /g/BITX20/message/23634 Marco - KG5PRT

You obviously haven’t been following the posts. Sent: Saturday, March 18, 2017 11:21 PM To: [email protected] Subject: [BITX20] Rotary encoder in place of pot i intend to use rotary

i intend to use rotary encoder in place of pot in raduino. Is it possible to implement? Anyone tried this?

I got my Bitx wired up today on my bench and it all appears to work. I have about 5 watts out on my watt-meter into a dummy load. It draws about 1.5 amps at 13.8 volts during transmit. I was surprised

Dale, I optimised the design further. Reducing the relays to just three. I added another cyrstal too as it really makes a difference. There should be a 4.7k resistor in series with the AGC diode too.

Larry, By the two cross connected wires going to the middle of the board, I presume you are talking about the DDS. I'm an old Navy Chief and firmly believe you get what you inspect, not what you

That's where I put my 5ah, agm deep cycle battery. I added a charging port to the rear and a switched voltmeter to the front. Fun stuff Sent from Mike's iPad WA1MAD

Well I am happy with that contact 5/9 both ways using the bitx40 about 7 watts out and into a 10 meter long vertical. God I love this little rig. Mark 2w0jmk

There is a pair of wires that are cross connected. They go to the center of the main board. You said you double checked the wire so just one other thing ..That pair from the display module is the 5

Farhan, Really looking forward to building the uBITX and am in the process of gathering together all of the components.? Also going to go SMD as you did. ?I have a few questions from studying your

Yep, don't know how that got in there, but indeed that was the problem. Thanks!

They were measured between Port A and Port B of a VNA2180 2-port VNA; they were also checked between a TG and SA. Both sets of equipment have well-controlled 50 Ohm source and load impedances. Steve

I’ve heard of software patches but I didn’t know they used duct tape. ;-) Mike K5ESS Sent: Saturday, March 18, 2017 12:23 PM To: [email protected] Subject: Re: [BITX20] Rotary Encoder and

kees, these filters are very fickle about the exact impedances at both ends. i hope you measured them with strong 50 ohms source and termination - f

Larry, The display is working and showing freq change, I do hear audio hiss with no antenna, much antenna noise when it's connected. I'm fairly certain wither the antenna is improperly tuned or the

Is the display working and showing a change in freq.? When U connect and disconnect the antenna do you hear the ant. noise vs audio hiss? Regards Larry WA9DOH wrote:

PJH, ? Many of us made our own Arduino/Si5351-based VFOs prior to the introduction of the Raduino concept earlier this year. ?Which way to go depends on how you want to tune. ?There are different