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Correction on first line, that's 240mA max current draw on the PA in the beginning.

Hello all, A couple of questions to bounce off all -- since the IF is 12Mhz (maybe change to 10.7 to get it further from 20m), couldn't 20-10 meters use the mixer sum, instead of difference, and this

Hi again. I searched the site but couldn't find an answer to my new problem. The radio has been working just fine for awhile now. However after trying a few qso's with strong stations, I realized that

Inventory for these boxes have greatly increased and plenty for everyone. I just ordered two. Thanks Jack for the info!

Ah, you already tried that. OK in that case you have no choice other than to remove the caps. 73, Allard PE1NWL

It looks like women who make BITX40 instead of L1. L2, L3 bandpass filter solder coils used in VFO ..... after reducing 10 turns of each coil L1, L2, L3 my BITX40 works in RX and TX as it should ....

Good Afternoon, So just got my Bitx40 up and running, made a few contacts with just a dipole. But even with my commercial rig some contact have told me i have a light voice. So is there any way i

thats already been done still too low

Sure. ?In theory you could crack open the IRF510 package and cool the die with liquid nitrogen. ?In practice, much easier to go with multiple devices. ? I suggest you copy the push-pull IRF510 amp

Alternatively you can increase the VFO drive by software, add the following line to the setup() routine: si5351.drive_strength(SI5351_CLK2, SI5351_DRIVE_8MA); 73, Allard PE1NWL

I have been reading stuff here about low power or audio for about 3 months now because my BITX40 was factory set to low power (drawing .024 mA at the final during wireup), output and also sounded like

I use two sets of Anderson power poles.? I can run the whole thing on 1 gel battery or 2 gel batteries. I have a switch wired such that the two batteries are a) in parallel, or b) battery #2 is

Could in theory we go higher than 25 watts or would that blow a circuit? Say 36 watts with enough cooling to get maybe 40w or more out?

thanks i will give it a try in a little while jgaffke@...> wrote:

You probably already saw this: IK3OIL 16F84 PIC Frequency Counter Files | | | | | | | | | | | IK3OIL 16F84 PIC Frequency Counter Files Caption (copied from the NorCal meeting

It is SSB ,so adding speech compression will increase peak power. Frank , GM0CSZ

Remove C91, C92 from the Bitx40 if you have not already, they bleed away too much of the VFO energy when the VFO is much over the stock frequency of 5mz. ?Those caps are only required if using the

Ok I have got the 40/80 M working and USB and LSB at least on 40m USB 3khz low approx. ?When I try to get to anything above 40m my receive gets lower and lower Probably LPF other than the Bandpass

Hello all. Can anyone tell me how to, or direct me to information on how to program the Ik3OIL FLL frequency counter for the 40 metre band. I purchased the Bitx kit from Fusion Radio and am having

Check it out: SolderSmoke Podcast #195: (We need some help!) BITX, 60, SSB History, Tribal Socketry | | | | | | | | | | | SolderSmoke Podcast #195: (We need some help!)