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Ian I inserted a second pot with value 500 ohms in series with the tune pot. It makes a very nice bandspread. 73, joe BITX20@...> wrote:

I agree about the resistors. In North America and Europe, they are very easy to get without ordering from India. I'm going to build an external analog VFO dead-bug style and see what I can accomplish

Hi Mark, I confirm the drift problem, if you change the six resistor from 100 to 220 ohm this help realy in RX mode. But in TX mode the problem return mybe becauae the PA warm up all the PCB...and

Thanks Mike, this is a good news. I will try to use a small amplifier to output the 9850, mybe it will help a lot. I've used the 9850 with a ne602 based receiver with success. I think that a couple of

my simplistic fix is to never switch off the radio. just mute the speaker. it is a ridiculous fix, i know... - f BITX20@...> wrote:

BITX20@...> wrote: cannot be so cheap... Again machineries cannot do everything, soft hands is for sure... Charity (Y)

BITX20@...> wrote: Ha ha! By machineries, as to decrease labor cost & time, otherwise it cannot be so cheap... BTW, torroids finds way frm pretty soft hands... Personally inspected &

Thanks

After about 30 minutes warm-up, it becomes pretty stable.

John, this reminds me I have tested for the BITX40 for the spurs to be all below -50dbc on my home built spectrum analyzer. I just hope someone else will also doubly test this just to be sure. -

Don't forget, guys,that EVERY transmitter must meet the rules of operation and emission for your country, no matter how it is originally set up or modified. In the USA, that means meeting the Part

they are all 1206 BITX20@...> wrote:

Might be a bit of a stretch Mike to hear you lot in north America. In VK3

the current draw is 90ma in receive - f BITX20@...> wrote:

Are the surface mount parts mounted by the woman's group? [BITX20] <BITX20@...> wrote:

I dont mind a little drift, I can work with that. 1 khz per min makes it a little difficult to listen to one signal for very long. To tune a single signal, I must tap the tuning control on top till I

Thanks for answering John. I didn't know as much about the history. I have Ashar's SMD version, and it works great, but I wouldn't mind a through-hole version in case I needed or wanted to replace a

Mark, Sunil Lakhani and Asher Farhan are in completely different companies. Sunil brought out the BITX20 v.3 some years ago (with Farhan's blessing). He has since expanded the line considerably;

Thank you for the AD9850 info! Well, I had a little Arduino + an AdaFruit Si5351 already setup. I had been experimenting with a 10 Mhz based BFO / VFO combination, and the Si5351 will provide up to