LZ5K 1533 MILES AWAY
Well I am happy with that contact 5/9 both ways using the bitx40 about 7 watts out and into a 10 meter long vertical.
God I love this little rig.
Mark 2w0jmk
By
Mark
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#23676
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Re: Troubleshooting new build
There is a pair of wires that are cross connected. They go to the center
of the main board. You said you double checked the wire so just one other
thing ..That pair from the display module is the 5
By
Larry Smith
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#23675
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uBITX Questions
Farhan,
Really looking forward to building the uBITX and am in the process of gathering together all of the components.? Also going to go SMD as you did. ?I have a few questions from studying your
By
dvhammer_99
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#23674
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Re: Fixing the galloping VFO problem
Yep, don't know how that got in there, but indeed that was the problem. Thanks!
By
KE0OG <casler28@...>
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#23673
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Re: QRP Labs Low Pass Filters
They were measured between Port A and Port B of a VNA2180 2-port VNA; they were also checked between a TG and SA. Both sets of equipment have well-controlled 50 Ohm source and load impedances.
Steve
By
Steve Hunt
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#23672
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Re: Rotary Encoder and latest sketch
I¡¯ve heard of software patches but I didn¡¯t know they used duct tape. ;-)
Mike
K5ESS
Sent: Saturday, March 18, 2017 12:23 PM
To: [email protected]
Subject: Re: [BITX20] Rotary Encoder and
By
K5ESS
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#23671
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Re: QRP Labs Low Pass Filters
kees,
these filters are very fickle about the exact impedances at both ends. i
hope you measured them with strong 50 ohms source and termination
- f
By
Ashhar Farhan
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#23670
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Re: Troubleshooting new build
Larry,
The display is working and showing freq change, I do hear audio hiss with
no antenna, much antenna noise when it's connected. I'm fairly certain
wither the antenna is improperly tuned or the
By
richard kappler <richkappler@...>
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#23669
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Re: Troubleshooting new build
Is the display working and showing a change in freq.? When U connect and
disconnect the antenna do you hear the ant. noise vs audio hiss?
Regards
Larry WA9DOH
wrote:
By
Larry Smith
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#23668
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Re: Rotary Encoder and latest sketch
PJH,
? Many of us made our own Arduino/Si5351-based VFOs prior to the introduction of the Raduino concept earlier this year. ?Which way to go depends on how you want to tune. ?There are different
By
AndyH
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#23667
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Re: Baofeng microphone mod for BITX
This is exactly what I was looking for! You did a nice job. Does this actually work? Does it key up when you press the PTT?
By
Daniel Acevedo
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#23666
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Re: Troubleshooting new build
Jonathon,
I suspect it is the antenna, I have moved it from inside the apartment to
out on the windowsill, but it's still not a prime location, it's only about
3 feet off the ground, 1st story window
By
richard kappler <richkappler@...>
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#23665
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Re: Troubleshooting new build
Richard,
Most likely you aren't receiving anything due to your antenna location. I take it that you are in an apartment or similar situation. It may be coupling to local objects. Is there a lot of
By
Jonathan Peakall
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#23664
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Troubleshooting new build
My BX is complete and running, I get sound from the speaker/headphones,
when I transmit I get measurable power out to the antenna. I do not have a
SWR meter at the moment, trying to borrow one until I
By
richard kappler <richkappler@...>
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#23663
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Baofeng microphone mod for BITX
All,?
This is a work in progress document for modifying a Baofeng microphone for the BITX40.
https://drive.google.com/file/d/0B8v7bRFPZV71U3BVR28zUEdkN2M/view?usp=drivesdk (
By
KF6EFG - John M
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#23662
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Re: QRP Labs Low Pass Filters
Mike,
I did the same using RFSim99, so the shift in the measured frequency response must be down to capacitor tolerances, inductor values being out, or, conceivably, stray capacitance added by the
By
Steve Hunt
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#23661
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Re: Using switching power supply....
I am using a switching supply and I have no noise. It is small and I put it into the
case next to the PCB. Works great.
Ed
By
ekelley
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#23660
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Re: Fixing the galloping VFO problem
You have to remove the stop at the end of the link!
https://youtu.be/f8VYHC6nkrk
By
Raj vu2zap
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#23659
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Re: Changing frequency display
" I listened to the equipment, not the music. "
Amen to that. Sometimes we get so caught up in the perfection of equipment and the doodads, that we forget the whole purpose of the game in the first
By
John Backo
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#23658
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Re: Changing frequency display
Yay Marco. There are so many hacks/mods on this simple little radio. I am hoping most will remember that this is a very good QRP radio. QRP in itself has it's own set of challenges and roadblocks.
By
Michael Davis <maddmd818@...>
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#23657
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