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Hi Lee, these? /g/BITX20/message/60125 http://hamradiodesigns.com/index.php/2018/09/19/jackal-features/ Alan

I think info is here but I could not find it using search.? Sorry if this bugs somebody.?? I think there was a link to where the JackAl add-on will be sold when ready and a link to the

Just stick the plug in and check with an ohmmeter. Dan

Would adding the LPF as specified by Farhan provide approximately the same output power, something more than 10w at least on the lower bands?

Hi everyone, at the Moment i build my ?BITX. I read a lot of hints, suggestions, Firmware updates. But i can't find the most Import thing for me: where could i get a documentation how to use the

Just happened to have this little can which fits over the 45Mhz area.?? Or perhaps even more area needs to be shielded. If that actually works.

Raj, sorry, i didn't take in the detail of your previous post in this thread. I guess you tried shielding etc of the stages. glenn

Glen, That was the first thing I did was try a pad instead of filter. But that did not help. It is the sane as reducing the mic drive. The filter helps to get rid of non IF signals (Harmonics) picked

What is the expected level into the Tx bi-amp stage at 45MHz? I don’t have a feel for this and can’t check it as my uBITX is in pieces at present. If it's a relatively high level then the 45Mhz

Joe, ? I've been using these 10k pots with switches from Mouser.? They're out of stock right now until the end of Nov, though.

The BFR106 parts will work pretty well, but I’ve used the ERA/MAR/GALI series of MMIC successfully there too with just a little circuit modification. Some tend to be very low noise factor. Sent:

With better gain, you can afford more negative feedback to reduce distortion

I thought we needed better linearity here to reduce distortion, not improved response ?

allison, let me try those out. thanks for the tip. i had 2n2222s so they went in. i remember you explaining why 2n2222 was better than 2n3904. - f

On my v4 with PA bias at minimum and Raduino plugged in and 12v, almost exactly 400mA idle.

Ideally you'd use a scope. The crud is close enough in to your suppressed carrier you'd be able to hear it on a SSB receiver by zero beating the carrier that is leaking. It appears you should hear it

Forgot to state that that’s 15 MHz WWV. It’s been about an hour and a half now ant the temp has stabilized at 96F (35.5C) with drift at 90 Hz. Using WWV and WSJT-X is also a good way to visually

Assuming you're still at 14mhz, that's a 1e6 * 74hz/14mhz = 5.3ppm change over a 92F-79F = 13 degree F temp change. So 5.3/13 = 0.41 ppm frequency shift per degree F change in temperature.

Here’s the result of my uBitx start-up frequency drift test. The thermocouple is not in direct contact with the crystal but is positioned next to in in between the Raduino main board and the LCD .

Farhan, For the 45mhz amp the only part suggested was BFR106 or maybe 2n2369/mmbt2369. I'd not use 2n2222 there but its better than 3904.? Any suggestion of of 2n2222A would have been in the power