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Bit of an excessive loss across what should be an amplifier .. voltage readings on Q 70 ..Continuity (dc) through relay k3 (contacts 12/14) ...resistance to ground at TP21 ? Jim

Thank you!!

45 mhz section at TP13, TP14 ...12 mhz at TP16 and TP17 .. Just shows that workarounds to limited freq range is possible ..Really don't know the level of the harmonics, but at least something is there

RE: "My guess is there is a cold solder joint or some toroid has a broken wire somewhere between L1,2,3,4 and/or T2. And with cables lying about to inject 7mhz into TP2, some of that 7mhz gets coupled

The ones for telephones are condenser type. The last one for PC I had was also condenser mic. Raj

Nice contact Michael, I had not thought about the ocean behind you would make a difference. Yes to others up to about this spring there was a weekly bitx net on 7277. I have worked many stations on my

I'm in the US in Northern California near the Pacific. I had the privilege of making a contact with D4C using my uBITX v3 on 15 meters on a day where there was a DX Contest. They have emailed me a

Hi Evan, I notice the frequency mentioned in the header is usually used for SSB. I am using my uBitx with external filtering on 80 through 17 meters and not at full bore either. I will eventually

Hi, My V3 isn't broken:) I have been using it. I don't want to make the QSX into something different than it already is (or will be). In fact, I am not interested in mods to my uBitx beyond taming the

I was till I noted that my uBitx is not legal, so until I get the parts and install I am off the air. 73 Evan AC9TU

No Problem, it happens a lot and I am use to it. 73 Evan

You all have seen those computer headsets like the VTIN with boom microphone. Does anyone know what kind of microphone those use.Eg. condenser , dynamic etc. If I open my junk drawer I may use it on

How embarrassing! I managed to make one different. Thanks for catching it!? -- Ryan Flowers - W7RLF MiscDotGeek.com ( http://miscdotgeek.com ) Multi Band BITX40 (

Injected 1.52v 1khz sine wave at base of q70 to get 0.1v p-p

Thanks interesting. TP 17 using third harmonic of 45+7.150 / 3 found a tone injecting around 17.59MHZ at 3.5v only got about 58mv p-p out at volume high TP 16 injecting at the same frequency 3.5v got

Actually the 20m at this season, at th at this local time is rather closed here. The 40m band is now best for dx. However today I would use a codan trx, not a qrp. If any one in interested in a

Unlikely to skip that far on 40 these days . Maybe on 20 meters. I have made Euro contacts ssb with my rig on 20. If you want to to try a qso on 20 let me know. Thank you Dave K0MBT

Here in the Euro Area there is a strong broadcast at the moment

Perhaps a bitx>bitx qso.

Thank you Ryan. It looks like an excellent series. The link you posted is not working. This one is good: https://miscdotgeek.com/building-direct-conversion-receiver-part-1/ parts 2 through 4 are here: