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I have both. Two different radios. They have a lot ifsimilarities, a lot of differences. If you are only going to get one, get the uBitx as it is the entire HF band, not just 40 meters. -- 72 and God

Hi Bill, Thanks for your reply. Yes, when I PTT the mic (and talk), the unit goes into TX mode and my external power/water meter moves back & fourth.? When I key down on the straight key, the

The discussion here thus far seems appropriate for this bitx20 group. If we're running off into the weeds on SA's much further though, might want to move it over to the HBTE group. Jerry

Yup, as I had said, filter out the strong signals first. With a signal generator, step attenuator, and RTL-SDR/DVB-T dongle plus upconverter, you could figure out the? response of the notch filter at

Hi Allen, I assume that "SSB is okay" means that you have output when you speak into the mic. Your external watt meter bobs up and down with your speech. Does the display change to show CW on the

Hi Jerry, The work-around I saw was using a notch filter to reduce the carrier a specified or known amount. The idea being the carrier is reduced going into the SA but the harmonics are not. Obviously

Allen I have the same enclosure.? If indeed you have the 4.7k ohm resistor installed (on that board with the connectors that mounts on front panel) -- then it must be a connection issue.? In this

Hello Jerry and group, The DVB-T dongles are not really intended to be used as I/Q capture devices, as-designed - and so the 40dB dynamic range isn't necessarily an issue, within the receive passband

My apologies if this has already been answered.? newbie here.? Just installed a new ubitx (4.3) in the?https://amateurradiokits.in/ case.? Very enjoyable build.? So far, everything seems to work

I use one with my Yaesu FT891 and it seems fine. Not tried it with the ubitx though.

If anybody can remember more about this 40dB dynamic range get around, I'd be very curious. Can't imagine how you would set up an 8bit ADC to get around the dynamic range problem. Seems the only path

Check? this out! https://smile.amazon.com/Neewer-Professional-Broadcasting-Microphone-Adjustable/dp/B00XOXRTX6/ref=sr_1_fkmr0_3?ie=UTF8&qid=1548087643&sr=8-3-fkmr0&keywords=microphone++19B801398P3 I

I am fine with keeping it public, just did not want to to go too far off topic or create unwanted churn. Disadvantage of starting another topic is that it will not get to people that need the

Hi Jerry, I read something in an ARRL publication about getting around that 40 dB dynamic range problem. Maybe by W7ZOI or W1FB. But it almost wants a spectrum analyzer to set it up. So it's a

Hi, Radios and projects like this one seem to want something to use for spectrum examination. Don't take it off list and hide it from the rest of us. 73, Bill KU8H

If you want to pursue this, what you really need next is a step attenuator: Kees is on the forum, he has a nice one here, kit #13 for $15:??https://www.qsl.net/k5bcq/Kits/Kits.html And a whole bunch

I too looked at that Rigol.? My perspective is if I am going to spend that much, I might as well go all in and get the units that include the tracking generator.? Depends on how you will be using

On Mon, Jan 21, 2019 at 06:55 AM, Evan Hand wrote: > > From my personal experience the RF Explorer seems to be good at the > harmonics.? I have measured the 3rd harmonic at the same levels as >

Hi Evan, Dave, I looked at the 'specs' as shown on the Amazon page Dave referenced. It didn't include information that Evan has given. The big deal about a spectrum analyzer is a requirement to

From my personal experience the RF Explorer seems to be good at the harmonics.? I have measured the 3rd harmonic at the same levels as reported by others (between 35 and 40 DB down), which gives me