mcHF 0.6.3
UI Board
- General purpose encoders
- LED lit buttons
RF Board
- The RF board real estate
- RF board
- Power Amplifier
- Low Pass Filters
- Power Amplifier Bottom Side
- RX Antenna Switch
- Band Pass Filters
- TX Preamp
- PWR/SWR Meter
- Connectors
- Power Supply
- Regulators Mount
- PWR/SWR Bottom
- PA Bias
Logic Board
- Logic Board
- DSP
- DSP and RF Clocks
- TX Switching Mixer
- RX Switching Mixer
- DSP Power
- Connectors
- Audio Processor
- VFO Encoder
Assembly
- Regulator and MOSFETs flat install
- RF board grove fit
- Logic board mount to the RF board
- 3D components spacing – RF/LOGIC
- All three boards together
- Front top view
- Speaker cavity on all three boards
- Speaker cavity side view
- Side encoders
- Speaker fitting
- Speaker connection
- Bottom lower side
- Top upper side
- UI board installed
- UI board side view
Hi Chris,
As good as v6 and v7 look and perform, v8 looks even better.
Could you please share future plans regarding v8, i.e. how much work it requires, if you are still working on it and most important, when it will be available.
I see your work as important for the hobby, well done for your efforts so far!
Hello Mircea
This will be a repeat on similar question. We have been in development for nearly two years now but donโt have any release dates yet. There is still a lot of work needed and this is just before starting beta testing. It is very difficult to put a time frame to a release. Itโs not going to be this calendar year for sure.
Thank you for you kind words.
Regards
Lucy
Hi Chris
Your photos of the v7 RF board show the original version of T7, while the schematics show the modified T7 with a center tap.
I have three questions:
1) which transformer do you recommend? Since the schematics show the modified transformer I am assuming that is the recommended version, for people who can build it
2) are any other modifications to the schematic required to use the modified version? I.e. the mod docs suggest adding 270 pF and 0.1 uF capacitors as well, although these are not shown on the schematic
3) what output power have you been able to achieve using the original transformer? It sounds like some people get up to 10 W. What about the modified transformer?
I know the ‘original’ version works since I have assembled my radio using one and verified that it works, although I can only get ~4 W on 20 m and even less on the higher bands. I can get about 7 W on 80 m which is reasonable, but my aim is 10 W on 80 – 20 m.
I have also built and tested a modified transformer, but while I believe it is built correctly I cannot get the radio to transmit anything with it installed. Clearly I have made a mistake but it is not obvious where!
Regards,
Sam ZL1OBI
Hi Chris!
The photo with low pass filters shows that all the toroids have one extra turn of wire (for example, L16-L20-L24 are shown as 8T-9T-8T on the schematic diagram, but they are actually 9-10-9 on the photo).
Why is that and which is correct?
Thanks!
Hello Chris,
Look interesting, can you put a photo of an assembled unit on the site please, difficult to see how it comes together. I assume the speaker is forward facing next to the display?
Thanks Danny.
Do you have any pictures of what mcHF 0.7 looks like in a case and with power on?
Chris, looks like a new version with 3 boards is in the works from the photo in the Gallery. Any updates on changes etc?
Hi Chris
Congrats on the new version 0.7. Looks good. After I have built 5 of your kits, I am looking forward to this new version. Hope it shall arrive soon. Keep up the good work
73 Chris
Hello Chris!
Very nice PCB’s!
So in this version will you implement a K plug for the mic? It would be great to can use a simple Baofeng or Kenwood mic speaker
73
Patrick
F6GWE
Hi Patrick,
I don’t have this, so no idea what it is.
73!
Hi Chris
Its just two stereo plug (one 2,5 mm and the other 3,5 mm) with a definited space between the two of 12 mm.
Look here :
https://ham.stackexchange.com/questions/1891/whats-the-pinout-for-kenwood-2-5mm-trs-3-5-mm-trs-connector
73 QRO
Patrick F6GWE
I second this recommendation, there are tons of options if using the Kenwood/Baofeng accessory. Big fan of Kenwood hand Mic SMC-34 which could optionally offer three mic PF buttons if a voltage divider detector is added to support them.
Chris, do you the boards either made up or as a kit for self assembly.
What is your e-mail, I cannot find it.
Or where can I purchase the kit from?
73’s Ken J. g4aho
Hi Ken,
You can get blank PCBs, components kit (not in stock right now) or partially assembled kit (factory SMD parts installed). All on the
Order page. My e-mail is djchrismarc at gmail.
73!
Hi Chris
I would be interested in a kit or even a built one ๐
Any Idea on cost and when pleas also a mailing list as to when it would be ready ๐
Many Thanks
Simon
M1BVX
Hi Simon,
Not for some time I believe. So far i can only offer the PCBs and the LCD. As for the mailing list, we have an Yahoo group,
link here: https://uk.groups.yahoo.com/neo/groups/M0NKA-mcHF/info
73, Chris
do you have a full kit fparts available?
if so how much and where can i get them from also a bill of quantities and building schedule availability ,
ThanksFrank
Hi Frank,
No full kit yet. The BOM, schematics and some building guides on the Hardware page, please check the sub menues.
Chris