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Re: Buyer beware! RD16HHF1
In Europe MRF510 can be bought from Conrad electronics, brand Vishy, for 50 cent plus shipping.
Unfortunately they do not offer RD16.
In Europe MRF510 can be bought from Conrad electronics, brand Vishy, for 50 cent plus shipping.
Unfortunately they do not offer RD16.
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By
ulf.jagfors@...
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#48944
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Re: boosting the power on 28 MHz
#ubitx
Bill
Thanks. Sounds like something I might want to try next time I have the
mainboard out of the case.
tim ab0wr
"K9HZ" <bill@...> wrote:
Bill
Thanks. Sounds like something I might want to try next time I have the
mainboard out of the case.
tim ab0wr
"K9HZ" <bill@...> wrote:
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By
Tim Gorman
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#48943
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Re: uBITXII
The narrow audio response is either a crystal filter bandwidth issue or the bfo setting.
The new firmware that we are talking about does NOT entail any hardware changes. It fixes things that are
The narrow audio response is either a crystal filter bandwidth issue or the bfo setting.
The new firmware that we are talking about does NOT entail any hardware changes. It fixes things that are
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By
Ashhar Farhan
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#48942
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Re: uBITXII
Dave
perhaps I should have said drive level, reports I got have been that the audio is narrow in frequency response
Walt VE7CWS
Dave
perhaps I should have said drive level, reports I got have been that the audio is narrow in frequency response
Walt VE7CWS
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By
VE7CWS WRSeiler <waltrseiler@...>
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#48941
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Re: Should we adopt the KD8CEC firmware?
I have followed all the KD8CEC uBITX sketch videos from the begining ( I do wish Dr Lee would put some sound guidance into these videos). There is a lot in the sketch that many of us still don't
I have followed all the KD8CEC uBITX sketch videos from the begining ( I do wish Dr Lee would put some sound guidance into these videos). There is a lot in the sketch that many of us still don't
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By
G1KQH
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#48940
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Re: uBITXII
ve7cws,
What would you change about the mic? Almost every one I have talked to on the radio, says that it has a good sounding audio quality on both the 40 and the micro.
73
dave
k0mbt
ve7cws,
What would you change about the mic? Almost every one I have talked to on the radio, says that it has a good sounding audio quality on both the 40 and the micro.
73
dave
k0mbt
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By
_Dave_ AD0B
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#48939
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Tx doesn’t transmit nor rx off
Hi guys.
When I press ptt i see tx on the screen but sound does not turn off and i see no power drain or power out on my meter
wiring is fine on the mic. Where woukd you start from to find the
Hi guys.
When I press ptt i see tx on the screen but sound does not turn off and i see no power drain or power out on my meter
wiring is fine on the mic. Where woukd you start from to find the
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By
César EA3IAV
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#48938
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First microBitx contact
Just tried out mBtix for the first time last night, no box yet(on order) so just laid out on the desk. Like some others, the BFO seemed off and it took at bit of adjustment to get received SSB to
Just tried out mBtix for the first time last night, no box yet(on order) so just laid out on the desk. Like some others, the BFO seemed off and it took at bit of adjustment to get received SSB to
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By
tonyrazzell2@...
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#48937
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Re: Are the uBITX receivers ripe for improvement? -- And some other miscellaneous thoughts.
I found my BITX 40 to be much better on receive than my old Sommerkamp FT277ZD on the same antenna. The difference was such that I could hear all the digital wurble with the BITX40 and not at all on
I found my BITX 40 to be much better on receive than my old Sommerkamp FT277ZD on the same antenna. The difference was such that I could hear all the digital wurble with the BITX40 and not at all on
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By
4Z1NT
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#48936
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Re: Are the uBITX receivers ripe for improvement? -- And some other miscellaneous thoughts.
Sensitivity is fine. I have used an homemade norcal S3 generator to see if it could receive it and was right. I check all receivers with it and all from ham radio, mil rigs and cheap portables behave
Sensitivity is fine. I have used an homemade norcal S3 generator to see if it could receive it and was right. I check all receivers with it and all from ham radio, mil rigs and cheap portables behave
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By
iz oos
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#48934
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Re: can I bypass the CP2102 chip on the NANO with an FTDI based serial adapter?
#arduino
#cp2102
#ftdi
#nano
One more comment. I was assuming your cable is intended for 5 volt digital logic connections, not actual RS-232. If it is RS-232 then the voltages may be an issue. But, you may be able to use limiting
One more comment. I was assuming your cable is intended for 5 volt digital logic connections, not actual RS-232. If it is RS-232 then the voltages may be an issue. But, you may be able to use limiting
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By
Tom, wb6b
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#48932
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Re: Should we adopt the KD8CEC firmware?
There’s always a link on the right hand menu of http://www.ubitx.net
The current release v1.061 version of the manual can be found
There’s always a link on the right hand menu of http://www.ubitx.net
The current release v1.061 version of the manual can be found
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By
Mike Woods
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#48931
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Re: boosting the power on 28 MHz
#ubitx
See the posts in the 3/21-3/31 date range (look for “RD16HHF1 power curve flattening”)… We’ve been through this. There were SPICE simulations, changes to all of the RF stages (bypass caps),
See the posts in the 3/21-3/31 date range (look for “RD16HHF1 power curve flattening”)… We’ve been through this. There were SPICE simulations, changes to all of the RF stages (bypass caps),
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By
K9HZ <bill@...>
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#48930
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Re: Are the uBITX receivers ripe for improvement? -- And some other miscellaneous thoughts.
tom,
I suggest you keep the font color black! the grey makes it difficult to read.
Raj
tom,
I suggest you keep the font color black! the grey makes it difficult to read.
Raj
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By
Raj vu2zap
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#48929
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Re: Are the uBITX receivers ripe for improvement? -- And some other miscellaneous thoughts.
The QTC, the sweden's ham radio magazine has put the ubitx+rtl_sdr on par with some top rated ICOM dsp radio. You might want to see how that author did it.
- f
The QTC, the sweden's ham radio magazine has put the ubitx+rtl_sdr on par with some top rated ICOM dsp radio. You might want to see how that author did it.
- f
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By
Ashhar Farhan
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#48928
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Re: Are the uBITX receivers ripe for improvement? -- And some other miscellaneous thoughts.
Don't bother. Many of us read via email so all you'll do is send out another copy of your message.
Vince.
--
Michigan VHF Corp. http://www.nobucks.net/ http://www.CDupe.com/
Don't bother. Many of us read via email so all you'll do is send out another copy of your message.
Vince.
--
Michigan VHF Corp. http://www.nobucks.net/ http://www.CDupe.com/
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By
Vince Vielhaber
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#48927
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Re: Should we adopt the KD8CEC firmware?
Here's the link for the KD8CEC manual, Norm: http://ubitx.net
It's one of the site menu items.
Tom
AB7WT
Here's the link for the KD8CEC manual, Norm: http://ubitx.net
It's one of the site menu items.
Tom
AB7WT
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By
Tom Christian
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#48925
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Re: Should we adopt the KD8CEC firmware?
I vote for the stock code with CAT added.
Tom
AB7WT
I vote for the stock code with CAT added.
Tom
AB7WT
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By
Tom Christian
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#48924
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Re: PA breaking into oscillation? (uBitx)
I could have a balance issue with the mixer diodes, I suppose. I'm using discrete BAT85 . . . not necessarily matched but from the same lot (Digi-Key).
The BAT85 is electrically identical to the
I could have a balance issue with the mixer diodes, I suppose. I'm using discrete BAT85 . . . not necessarily matched but from the same lot (Digi-Key).
The BAT85 is electrically identical to the
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By
Mike
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#48923
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Re: can I bypass the CP2102 chip on the NANO with an FTDI based serial adapter?
#arduino
#cp2102
#ftdi
#nano
You should be able to connect your FTDI cable directly to the D0 and D1 pins on the Nano. The onboard chip drives the serial data through 1K resistors and allows the D0 and D1 pins to override the
You should be able to connect your FTDI cable directly to the D0 and D1 pins on the Nano. The onboard chip drives the serial data through 1K resistors and allows the D0 and D1 pins to override the
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By
Tom, wb6b
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#48922
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