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Re: mono band 2 meters rig based on the micro BITx circuit
#ubitx
#2meters
For 6 and 2m SSB use it is a great staring point. The power amp stages are not up to it for 2
at all but for 6 with work it can be made to work. For the RX side you need a good LNA
on 6 and 2.
For 6 and 2m SSB use it is a great staring point. The power amp stages are not up to it for 2
at all but for 6 with work it can be made to work. For the RX side you need a good LNA
on 6 and 2.
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By
ajparent1/KB1GMX <kb1gmx@...>
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#47450
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Re: A steal for Arduino Experimenters
Agree this kit is an excellent starter but, the Uno does not have A6 & A7 ports, the Nano does have A6 & A7.
Also if buying a Nano from China be aware there are two versions, the Nano V3.0 with the
Agree this kit is an excellent starter but, the Uno does not have A6 & A7 ports, the Nano does have A6 & A7.
Also if buying a Nano from China be aware there are two versions, the Nano V3.0 with the
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By
GM4CID
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#47449
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Re: mono band 2 meters rig based on the micro BITx circuit
#ubitx
#2meters
I think it would be a great project. In the ‘60s I built a solid state 2M transverter and it only had 100mW output but I worked 500 miles regularly with my little Skelton slot antenna. A sad story
I think it would be a great project. In the ‘60s I built a solid state 2M transverter and it only had 100mW output but I worked 500 miles regularly with my little Skelton slot antenna. A sad story
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By
Dave Bottom <ars.kd6az@...>
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#47448
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Re: ND6T AGC implementation for uBIT-X
Just to let everyone know I have uploaded a BOM for the TH version, using Tayda Electronics as supplier.
The files are still on my cloud
Just to let everyone know I have uploaded a BOM for the TH version, using Tayda Electronics as supplier.
The files are still on my cloud
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By
Ion Petroianu, VA3NOI
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#47447
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Re: For those keeping track of uBITX shipping times
#ubitx
Forgot to mention, it's serial # 133/5 so they must be in the 5th batch now. It does have a socketed UTC audio chip.
W0EB
Forgot to mention, it's serial # 133/5 so they must be in the 5th batch now. It does have a socketed UTC audio chip.
W0EB
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By
Jim Sheldon
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#47446
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Re: For those keeping track of uBITX shipping times
#ubitx
12:31 Central US Daylight time, DHL courier handed me the package! It don't get much better than that!
Jim - W0EB
12:31 Central US Daylight time, DHL courier handed me the package! It don't get much better than that!
Jim - W0EB
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By
Jim Sheldon
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#47445
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Re: D104 microphone
#ubitx
The ubitx wants to see a low-impedance drive from the mic, comparable to a 600 ohm impedance or thereabouts. The D-104 crystal element presents a 50K ohm impedance, and the amplified D-104 presents
The ubitx wants to see a low-impedance drive from the mic, comparable to a 600 ohm impedance or thereabouts. The D-104 crystal element presents a 50K ohm impedance, and the amplified D-104 presents
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By
Jim Strohm
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#47444
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Re: New uBITX Raduino (never used) For Sale
#ubitx
The Raduino has been spoken for. There may be another one available (same deal) early next week and I'll post that if it happens.
Jim - W0EB
The Raduino has been spoken for. There may be another one available (same deal) early next week and I'll post that if it happens.
Jim - W0EB
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By
Jim Sheldon
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#47443
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New uBITX Raduino (never used) For Sale
#ubitx
I have a never used Raduino from a Micro BITX (not a BITX40) complete with display just as it came in the box from India. $30 US plus shipping ($8.00 US, $15.00 International).
Please "reply to
I have a never used Raduino from a Micro BITX (not a BITX40) complete with display just as it came in the box from India. $30 US plus shipping ($8.00 US, $15.00 International).
Please "reply to
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By
Jim Sheldon
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#47442
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Re: For those keeping track of uBITX shipping times
#ubitx
My ubix is still MIA ordered 26/03 no trace of it been shipped still waiting for it to be sorted out :(
My ubix is still MIA ordered 26/03 no trace of it been shipped still waiting for it to be sorted out :(
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By
chris gress <Chrisg0wfh@...>
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#47441
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Re: ND6T AGC implementation for uBIT-X
I can do anything with the shear.....still waiting for the dust to settle on this overall design.
Just bought a qty of NXP 2N7002P parts.
73 Kees K5BCQ
I can do anything with the shear.....still waiting for the dust to settle on this overall design.
Just bought a qty of NXP 2N7002P parts.
73 Kees K5BCQ
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By
Kees T
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#47440
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Re: ND6T AGC implementation for uBIT-X
Snap it across a row of unplated holes.
Fri, Apr 27, 2018 at 07:44 am, Jerry Gaffke wrote:
Snap it across a row of unplated holes.
Fri, Apr 27, 2018 at 07:44 am, Jerry Gaffke wrote:
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By
Jerry Gaffke
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#47439
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Re: ND6T AGC implementation for uBIT-X
I'd also like to see the same.
73
Ken VA3ABN
I'd also like to see the same.
73
Ken VA3ABN
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By
Ken
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#47438
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Re: ND6T AGC implementation for uBIT-X
AGC and Pop fix want to be in different regions of the board,
and they are both operating on low level signals.
They might agree to be in the the same envelope.
Perhaps have the builder nip the PC
AGC and Pop fix want to be in different regions of the board,
and they are both operating on low level signals.
They might agree to be in the the same envelope.
Perhaps have the builder nip the PC
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By
Jerry Gaffke
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#47437
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Re: For those keeping track of uBITX shipping times
#ubitx
Yes indeed. Mine must have been in there right along with yours. It made it to Romulus Michigan this morning and is now out for delivery.
Yes indeed. Mine must have been in there right along with yours. It made it to Romulus Michigan this morning and is now out for delivery.
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By
john@...
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#47436
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Re: No PTT
Hi both,
4.7k pullup resistors fitted to Raduino board as instructed. There is now 5 volts at the encoder pins A & B, which varies 0-5-0-5-0 as the tuning knob is turned. This makes no difference, the
Hi both,
4.7k pullup resistors fitted to Raduino board as instructed. There is now 5 volts at the encoder pins A & B, which varies 0-5-0-5-0 as the tuning knob is turned. This makes no difference, the
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By
Geoff Theasby <geofftheasby@...>
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#47435
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A steal for Arduino Experimenters
I just saw this ad from Banggood for $22:
Geekcreit® UNO R3 Basic Starter Learning Kit No Battery Version For Arduino
$21.99
Geekcreit® UNO R3 Basic Starter Learning Kit No Battery Version For
I just saw this ad from Banggood for $22:
Geekcreit® UNO R3 Basic Starter Learning Kit No Battery Version For Arduino
$21.99
Geekcreit® UNO R3 Basic Starter Learning Kit No Battery Version For
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By
Jack, W8TEE
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#47434
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Re: Ubitx average SSB output
1K. Change one or the other, not both.
1K. Change one or the other, not both.
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By
Howard Fidel
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#47433
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Re: Ubitx average SSB output
If R63=24ohm what value should R65 be?
If R63=24ohm what value should R65 be?
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By
iz oos
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#47432
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Re: Ubitx average SSB output
Skip:
I didn't touch R65. Changing its value changes the DC operating point at the collector of Q6. R63 has almost no effect on that, since the current is set mostly by R64 which is
Skip:
I didn't touch R65. Changing its value changes the DC operating point at the collector of Q6. R63 has almost no effect on that, since the current is set mostly by R64 which is
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By
Howard Fidel
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#47431
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