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

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

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

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

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

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

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 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

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 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-

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

Is it allowed? Bob -- Bob nz2z

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

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

Looking for a set of boards. Thanks, Chuck WD8BXS

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

Peter1802, where are you???

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

Christophe: This is how I got around the CMOS version of the SI570.

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