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Resettable fuse
7 messages
Is there a recommendation for a PTC resettable fuse suitable for the mcHF? Or is the best solution to put a larger value SMT fuse (i.e. 4-5A) on the board and add a properly sized fuse externally? Tha
Is there a recommendation for a PTC resettable fuse suitable for the mcHF? Or is the best solution to put a larger value SMT fuse (i.e. 4-5A) on the board and add a properly sized fuse externally? Tha
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Robert Nickels
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At Power-On: Input Elements Test
2 messages
When switching on the mcHF-QRP I get a screen with, among other things: Initial keys: 20000 Input Element Test I purchased the mcHF-QRP in built and tested condition. I couldn't find anything about th
When switching on the mcHF-QRP I get a screen with, among other things: Initial keys: 20000 Input Element Test I purchased the mcHF-QRP in built and tested condition. I couldn't find anything about th
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By
pa4w
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Brief audio from nearby frequency after transmitting
4 messages
I'm curious if the following is a known problem: When operating SSB with my mcHF, I often hear a brief snippet of audio immediately after I release the PTT button on my mic. The audio is long enough t
I'm curious if the following is a known problem: When operating SSB with my mcHF, I often hear a brief snippet of audio immediately after I release the PTT button on my mic. The audio is long enough t
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By
Trevor Stone
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For Sale mcHF .7
6 messages
This radio receives but doesn't transmit. I'm not going to fix it too many other projects. comes with mike and power cord. Photos attached Asking $100 plus shipping from Kansas City Added I have a mat
This radio receives but doesn't transmit. I'm not going to fix it too many other projects. comes with mike and power cord. Photos attached Asking $100 plus shipping from Kansas City Added I have a mat
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By
Mike Irwin
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CW filters
5 messages
Does anyone know if there is any possibility to get more CW filters for this radio (mcHF)? The narrower filter now seems to be 300-500Hz. Does there any software version exist which provides 100Hz fil
Does anyone know if there is any possibility to get more CW filters for this radio (mcHF)? The narrower filter now seems to be 300-500Hz. Does there any software version exist which provides 100Hz fil
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By
Piotr Bieranowski
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gerber files for PCB of mcHF 0.6
24 messages
Hi, Does anyone know who can help to get gerber files for mcHF? I'd like to start collecting components required for that trx, but PCB's are on top on the BOM list. Can Gerber files be found somewhere
Hi, Does anyone know who can help to get gerber files for mcHF? I'd like to start collecting components required for that trx, but PCB's are on top on the BOM list. Can Gerber files be found somewhere
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By
Piotr Bieranowski
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Parts Substitutions do to obsolescence - long lead time
17 messages
All: While acquiring my BoM for a V.07 build, it was clear that I would have to make some substitutions, primarily caused by either extreme lead times or obsolescence. Listed below are the substitutio
All: While acquiring my BoM for a V.07 build, it was clear that I would have to make some substitutions, primarily caused by either extreme lead times or obsolescence. Listed below are the substitutio
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By
Rich Miller
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Activating the touch screen feature on a 0.4 Radio
5 messages
All I understand the all I need is 5 wires to activate the touch screen feature on my mchf 0.4 radio. Does anyone have a clear picture for where those wires go or even a specific point that I can find
All I understand the all I need is 5 wires to activate the touch screen feature on my mchf 0.4 radio. Does anyone have a clear picture for where those wires go or even a specific point that I can find
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By
Tom Flynn
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FOR SALE . Non-working original M0NKA mcHF - perhaps an easy fix?
3 messages
Hi I'm checking if there is an interest in buying my broken mcHF? The radio is original M0NKA (0.6.3 I believe) including case and mic. The radio took a fall from a table and then died. Most likely so
Hi I'm checking if there is an interest in buying my broken mcHF? The radio is original M0NKA (0.6.3 I believe) including case and mic. The radio took a fall from a table and then died. Most likely so
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By
SM0NOR
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Firmware/boot-loader - couple of questions - please help
5 messages
Hi All, I'm not very familiar with the SDR technique, so I hope someone will be able to answer my questions: 1) Do I need to upgrade boot-loader along with firmware every time or can I just left boot-
Hi All, I'm not very familiar with the SDR technique, so I hope someone will be able to answer my questions: 1) Do I need to upgrade boot-loader along with firmware every time or can I just left boot-
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By
Piotr Bieranowski
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for sale
2 messages
I have a MCHF that I’m posting for sale. It works, but for my kind of field operation it is too heavy and too large. I was going to install the automatic tuner, but decided that I really don’t want to
I have a MCHF that I’m posting for sale. It works, but for my kind of field operation it is too heavy and too large. I was going to install the automatic tuner, but decided that I really don’t want to
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By
Bob Bennett
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Can I post one for sale here?
2 messages
Is it allowed? Bob -- Bob nz2z
Is it allowed? Bob -- Bob nz2z
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By
Bob Bennett
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"USB Interface mchf" audio driver on Windows-10 seems not supporting the 96Khz sampling rate
15 messages
Hi All The WM8731 codec used by the mchf can support higher sampling frequency then the actual 48000 Hz to 96000 Hz without any problem, an UHSDR firmware was already modded to manage this with codec
Hi All The WM8731 codec used by the mchf can support higher sampling frequency then the actual 48000 Hz to 96000 Hz without any problem, an UHSDR firmware was already modded to manage this with codec
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By
Team-SIM SIM-Mode
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Latest firmware
3 messages
My genuine mcHF is currently on firmware version D2.12.0 I see that 2.12.2 is available. Is this the recommended update or are there others out there? The reason I ask is that I'd like to be able to a
My genuine mcHF is currently on firmware version D2.12.0 I see that 2.12.2 is available. Is this the recommended update or are there others out there? The reason I ask is that I'd like to be able to a
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By
Leo
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Boards
9 messages
Looking for a set of boards. Thanks, Chuck WD8BXS
Looking for a set of boards. Thanks, Chuck WD8BXS
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By
Carl Horvath Jr
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mcHF not working properly
3 messages
Hi all mcHF fellows! I hope anyone could help me to find the problem or point me in the right direction to get a mcHF working correct. I have got one, rev. 0.3, and this one is working very nice, at l
Hi all mcHF fellows! I hope anyone could help me to find the problem or point me in the right direction to get a mcHF working correct. I have got one, rev. 0.3, and this one is working very nice, at l
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By
Karl Jan Skontorp
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Peter1802
2 messages
Peter1802, where are you???
Peter1802, where are you???
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By
Carl Horvath Jr
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Experimental firmware for a basic Noise Reduction function
6 messages
Hi All for voluntary experimenters, this experimental modded firmware attached below has the experimental pedagogical purpose of a function of the simplest and most basic background noise reducer in t
Hi All for voluntary experimenters, this experimental modded firmware attached below has the experimental pedagogical purpose of a function of the simplest and most basic background noise reducer in t
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By
Team-SIM SIM-Mode
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SI570 LVDS mod Pictures
2 messages
Christophe: This is how I got around the CMOS version of the SI570.
Christophe: This is how I got around the CMOS version of the SI570.
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By
Rich Miller
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Genuine UK MCHF for sale
2 messages
Selling my now surplus MCHF Built by me and checked over by Carl WD8BXS. Has TCXO, internal ATU, notchless VFO Mic, stand, etc. Only selling as I have too many QRP rigs now ( check my QRZ page ) I wou
Selling my now surplus MCHF Built by me and checked over by Carl WD8BXS. Has TCXO, internal ATU, notchless VFO Mic, stand, etc. Only selling as I have too many QRP rigs now ( check my QRZ page ) I wou
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By
M0awn
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