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Is push pull generally has higher spectral purity than single end transister ? Ubitx is push pull, bitx40 is single end. I read comments stating that bitx40 has better spectural than ubitx, because it

Forgot to add : Call sign is k0mbt 73? Dave

I have my radio on that frequency.

Don't know for sure. Christmas party this afternoon so be tomorrow before much else gets done.

Until then, we have it in the files here. /g/BITX20/files/bitx_with_raduino.zip 73 Andy KG5RKP

Two watts will deliver 5-7 watts. The 2 meter transverter by TenTec I think has a bandpass filter at the input which might filter out the spurs on SSB (CW should be fine in any case). Il 02/dic/2018

Sent from my Huawei tablet Hiya, I have finished building my UbitX. It is hissing in the earphones (no speaker connected yet) I can hear static, but no rx signal. I tried tuning through some bands

The stock ?BITX has a drive adjustment at RV1 - the pot that follows the first stage in the RF chain (Q90).? I've used mine to drive a WA2EBY amp on 40 meters and adjusting RV1 was all it took to

I only had a flat tip for my weller iron. I got a pointy tip recently and found that the tip didn’t stay tinned for very long and it didn’t heat the solder as quick as my flat tip. I’ve soldered

Yes I know the 1208 as it was hard to adjust my then hf rig to not overdrive the transverter on ssb, when it could be fine on cw. My 1208 did best with only 2 watts drive on ssb. The stock ubitx has

Depends on how much power you have on 14Mhz, a 10w non inductive fixed attenuator is best, to be on the safe side - 3db.

I want to use my v4 uBITX (under construction), with a Ten-Tec 1208 6m Transverter (SSB) that requires input of MAX 5W. What’s the best way to limit the uBITX output power? Ideas appreciated,

Have you looked at the Hamskey.com (Ian Lee KD8CEC) web site?? The files for his firmware versions include options for bath parallel and serial LCD interface.? I also believe that there was a

Would hfsignals please restore the missing link in http://www.hfsignals.com/index.php/2017/11/23/bitx40-circuit-description/ At top 10 percent, "download the circuit diagrams" 73 Simon

thank you but there is still 3 pages of entries and most do not the si5351 dds. with i2c anyone? d

We want to buy either a uBitx, multiple band or bitx40, single band, for "experimental use", apart from normal use. We have a Arduino DDS AD9850 board programmed to generate psk31 RF at hf freq. It

Hard to tell, for what I know, there have been different production batches, each board was checked but may slightly behave differently from others. Current production should have solved relays issues

Dileep, sad to know yours is from Worldchips, too. Mine is working perfect. It seems your unit is defective.

All the best Balan. I had one such with TJC 3.5 display and Aliexpress supported my cause and of course I sought partial refund, as mian display still works and only the touch glass broken.

Thanks RAJ, It relieves us from the frustration regarding the issues under concern. wish all success, post launch and let the sat serve the ham community at large. regards sarma vu3zmv wrote: