UBITX Ver 6.1 building experience
Here are my experiences with the assembly and testing a new UBITX Ver 6.1 Kit
Purchased from GIGAPARTS Huntsville, AL. late August 2020
Powering up the Ubitx Ver 6 first time:
Transmitter Power output CW and SSB:
I verified the above readings with a different Wattmeter of know accuracy and they are correct.
As mentioned previously the Mic Connector was not extending through the front panel and I could only get ¼ to ½ turn on the circular nut.
The Autek Research wattmeter has a function that allows Average or Peak RF readings.
The SSB RF output into the DUMMY load on ALL BANDS was less than ONE-WATT OUTPUT. Even when the Autek was switched to Peak readings the readings were still one watt or less!
I have read that in this Group that low SSB output is common with the supplied Baofeng Mic.
A microphone that works with the UBITX V6 model in SSB mode that produces full SSB rf output would be most appreciated!
My Experience with the building and testing of the Ver 6 kit, is that the Receiver suffers from the lack of AGC, and the CW output power is not level across the ham bands, the CW Side Tone is very loud when working a weak CW station. SSB contacts will be very difficult using the stock BAOFENG microphone, as RF output on all Bands will be 1 watt or less.
A lot of your comments are on point. It's definitely a little rough around the edges as-shipped, but that's part of what keeps the costs down. The mic and case weren't part of the earlier kits, so the fact that the v6 has them at all makes it easier to get on the air in the first place. Also, many of the issues you listed can be mitigated with a little elbow grease. A quick search will turn up ways to build AGCs (or even purchase!), suggestions of better microphones, etc.
The SSB switching USB/LSB is a known issue with the stock software as shipped. If you press the side band button you want, then move the tuner knob to change the frequency (and then of course move it back), that should get the side band to switch for you. Alternatively, you can install my software, which will work the way you'd expect ;)
I’m recalling the several issues I encountered and fixed. These deficiencies surprised me and were at first disappointing.toggle quoted messageShow quoted text
• USB /LSB switching due not work because I had not aligned the BFO
• The volume shaft was too short..... I ended up filing down the knob . That fixed the issue , but was an unpleasant discovery in the first place.
• The Baofeng mic in my kit failed quickly , I replaced with a recommended power mic listed in this discussion group and then received QSO reports of excellent modulation.
Having fixed these three issues, I got on 20 meters using a vertical 1/4 wave ground plane antenna and had QSOs with at least 4 European stations. I was unaware that I was outputting only a few watts during my 20 meter QSOs but I received great reports on my stations audio quality. I was competing with stations running full power but still managed to make contacts over seas. ( this is why I like QRP and will not boost the power of my V6 )
So my conclusions:
Although I was a bit taken aback by the issues listed above, the V6 is still a great buy for the money. I have been pleased by the support received by this group.
For HF Sigs :
I believe that it be best to have an up-front leaflet included with the HF Sigs kit of the main issues discussed. This leaflet would set buyers expectations and to avoid the surprise /disappointment questions directed to this support group.
Covered issues should include:
1) Baofeng microphone weakness /failure
( a recommended better mic or include a better mic with the kit)
2) The power output on each band listed in the kits description and on the advertising web site of HF Sigs.
3) The mandatory setup required of frequency and BFO alignment.
4) The volume knob shaft issue
On Sep 5, 2020, at 3:46 AM, Reed N <greenkid336600+groupsio@...> wrote:
On Sat, Sep 5, 2020 at 01:00 PM, Jeff Debes wrote:
3) The mandatory setup required of frequency and BFO alignment.What do you mean? The V6 should be supplied from HF signals already calibrated - At least mine was and did not need any adjustment - anyone building one should confirm that it works before changing the calibration.
toggle quoted messageShow quoted text
On my v6 80 m worked fine, but 20 m was warbling. I tuned and then both worked, pretty straight forward..
Best regards, Ole
Den 7. sep. 2020 kl. 10.52 skrev Mike G4GOU <mike@...>: