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esden.net
And here we go! We have a fully assembled mcHF QRP radio! There is more work to do, but let's sit back and enjoy the view l for a little bit! :D #hamradio #kitradio #mchf
The mcHF QRP radio fully assembled in it’s enclosure.
December 8, 2024 at 11:21 PM
esden.net
Sidequest: I took the mcHF design files and imported them to KiCad. You can find them on my GitHub. github.com/esden/mchf-kicad and yes they open in KiCanvas!!! ;) UI Board: kicanvas.org?github=https... RF Board: kicanvas.org?github=https... #hamradio #kitradio #mchf #kicad
The mcHF power amplifier section schematic as viewed in KiCanvas.
December 6, 2024 at 3:02 PM
m1geo.com
Todays #POTA activation was at GB-4807. I activated with my mcHF, homemade in 2015, on the higher HF bands with 10W CW.

A added bonus was meeting up with @qrper.bsky.social Thomas K4SWL (M5SWL with his UK call), as well as Bob M6BOB. #hamradio
July 15, 2026 at 11:24 PM
wesharebaddies.bsky.social
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June 29, 2026 at 2:04 PM
esden.net
It has been sitting in a box on my shelf for way too long! It is time to finally assemble the mcHF radio! Let’s see how it goes! :) #opensource #hamradio #amateur #qrp #electronics #assembly #kitradio
Two green PCB. Lower one is the user interface and the upper one is the RF board. In the right upper corner are little baggies full of parts. In the left upper corner is the enclosure. In the left lower corner is the display for the radio.
December 3, 2024 at 2:54 PM
esden.net
Next I have added the encoders and the tact switches. Interestingly the pads for the SMD tact switches are genuinely massive, because of that, getting them soldered on centered and straight is much harder than it should be. :/ #hamradio #kitradio #mchf
mcHF radio UI board with the encoders and tact switches soldered on.
December 4, 2024 at 3:38 PM
esden.net
Digital modes like FT8 are quite amazing! I am able to receive messages from across the globe! (Also: Setting this up was shockingly easy with the mcHF. All I needed to do was to hook it up over USB and configure the WSJT-X software to use it!) #hamradio #mchf #ft8
Screenshot of the GridTracker software showing FT8 communication log. Some blue and green squares in the us as well as China and Japan!
December 9, 2024 at 4:07 PM
esden.net
Now I need to wind all the inductors for the lowpass filters. Each filter consists of 3 inductors. I started with the 80m band toroids. 24, 27 and 24 turns each. #hamradio #kitradio #mchf #kicad
The green mcHF RF PCB. In the center there are three red ferrite toroids with copper enameled wire wound around them. From left to right they have 24, 27 and 24 windings each. Schematic of the mcHF filter circuit. There are four groups of filters. For 80m, 40m, 20/30m and 15/17/12/10m bands. Each group of filters is a series of three inductors with capacitors connected to ground between each stage.
December 7, 2024 at 6:08 PM
esden.net
New toys arrived! I can now safely finish calibrating the mcHF radio. The dummy load is a bit of a handful but one can aspire to bigger things in the future… right? 😅 #electronics #hamradio #hf
On the left is a SWR/Power meter by SureCom model SW-102HF. On the right is a 50W dummy load held in the hand for size reference.
December 14, 2024 at 3:51 PM
esden.net
First thing for the case is to screw in and solder the wire to the speaker. #hamradio #kitradio #mchf
Speaker screwed into the back half of the mcHF radio enclosure. The speaker has a red and black lead with a connector soldered to it.
December 8, 2024 at 10:28 PM
esden.net
I decided to temporarily put the case and boards together. I want to make sure that the recommended standoff distance for the LEDs is what I want. #hamradio #kitradio #mchf
mcHF case shifted to the right, over the UI board. Holding a through hole LED with tweezers sitting against the edge of the case to gauge the distance to the PCB.
December 4, 2024 at 4:33 PM
i4cy.com
Summer is here, so time to go portable. Working the 20m HF band using an SDR mcHF radio kit, a homebrew 70W linear and SWR meter.

#mcHF #HamRadio #AmateurRadio #hamr #sdrradio #sdr
[02/06/2020]
Image: 1267746935462641665-EZfxG-CXgAIHe50.jpg
May 18, 2025 at 7:52 PM
esden.net
Here we go! All the filter inductors are wound and soldered in! I tried my best to do an even and clean job... I did check them with the low cost LCR meter I have and they seem to be in the ballpark of the specified values. #hamradio #kitradio #mchf
The mcHF RF pub with 12 toroidal inductors. The winding count varies from left to right. On the left the inductors have less windings than on the right. The left most set of three inductors are for the roughly 10m bands, then 20m and 30m. The last two columns are 40m and 80m bands.
December 7, 2024 at 9:52 PM
esden.net
I got some silicone thermal pads for the TO-220s, so I have to take the radio apart and put them in. While I am at it I am also adding the optional TCXO temperature sensor. The instructions recommend to couple the oscillator and the sensor with some copper tape. #hamradio #kitradio #mchf
The mcHF RF board with an SO-8 Temperature sensor soldered on. There is a copper tape shape bridging across from the SO-8 To the square oscillator package. The same mcHF RF board but without the copper tape connecting the thermal sensor with the TCXO The mcHF RF board before the temperature sensor was soldered in. The SO8 package is missing.
December 17, 2024 at 3:21 PM
esden.net
Remember how at the beginning we were missing a resistor for the electret microphone? It arrived, so let's solder it in before we assemble the whole radio into the enclosure. #hamradio #kitradio #mchf
The mcHF UI board with the R8 resistor soldered in. This provides phantom power to the electret microphone of the handset.
December 8, 2024 at 9:40 PM
esden.net
After mounting one stray relay on the back side of the board, we can finally assemble the parts that go onto the "front side" of the RF board. Another funky balun, 3 relays, some connectors and a neon bulb to protect from the antenna zapping us. :D ⚡️ #hamradio #kitradio #mchf
The mcHF RF board. Three white boxes which are the micro relays as well as a glass bulb with two electrodes inside. The bulb is a neon bulb connected to the antenna. mcHF RF PCB back still visible are all the magnetics, but now it also has a relay mounted. Full view of the front of the mcHF RF board. With the connectors, relays, neon bulb and the balun installed.
December 8, 2024 at 5:02 PM
esden.net
Ok, they turned out all right. There is way more wiggle room in the case openings than I originally expected. I did not have to be so precise about it. 😅 #hamradio #kitradio #mchf
Two LED soldered into the UI board. They are elevated above the board without dedicated standoffs. In production one would use plastic standoff sleeves to make the distance consistent. Doing it this way is too finicky otherwise. The mcHF case mounted, showing the tips of the LEDs through the holes. The holes have quite a lot of tolerance around the LEDs.
December 4, 2024 at 5:28 PM
igda-ch.bsky.social
This is a great moment for game creators in Zurich! For the next three years, 1 mCHF in funding will be provided for projects per year.

Registrations for games funding in Zurich is now open. Applications start Oct 1st. Information event on Sept 25th.

All Info: filmstiftung.ch/digitale-kul...
August 25, 2025 at 1:54 PM
hamradiosupplies.bsky.social
www.ebay.com/itm/22731037...

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June 15, 2026 at 7:11 AM
leesa152.bsky.social
#Montreal
#MCHF
#Radiothon
#Kids
tsn690.bsky.social TSN 690 Montreal @tsn690.bsky.social · Aug 21
Today is TSN 690’s Caring for Kids Radiothon in support of @hme-mch.bsky.social. Call 514-939-KIDS or visit TSN690.ca to make a donation!
August 21, 2025 at 7:47 PM
esden.net
The front panel has some silicone buttons. But oddly enough these are not mats that fit the hole pattern. One has to clip the buttons apart and then insert into the button holes. It makes the assembly a bit awkward because the buttons love to fly out of position. #hamradio #kitradio #mchf
The front of the mcHF enclosure in the background. In the foreground there are scissors holding two silicone buttons in a strip.
December 8, 2024 at 11:11 PM
stefonair.bsky.social
Canton of Zurich provides 4.5 mCHF for the next 3 years in funding for digital culture: games and interactive media. It also includes funding for strengthening the ecosystem!

Registration starts today at Zurich Film Fund: filmstiftung.ch/digitale-kul...

#swissgames
Digitale Kultur – Zürcher Filmstiftung
filmstiftung.ch
August 25, 2025 at 1:46 PM
esden.net
Now the UI board can be mounted on top of that. Let's finally remove that pesky protective film from the LCD display! #hamradio #kitradio #mchf
December 8, 2024 at 11:06 PM
rolfkurath.bsky.social
💚Die gute Nachricht: Uetikon am See hat 11,1 MCHF für den Neubau von Asyl-/Sozialwohnungen mit 55% Ja bewilligt, trotz der bösartigen Nein-Kampagne uetiker.ch Eine Meisterleistung des Gemeindepräsidenten Urs Mettler, konzeptionell, taktisch, Behördenkommunikation www.uetikonamsee.ch/pressemittei...
Medienmitteilung Gemeinderat, Richtigstellung des Gemeinderats zum Neubau von Sozialwohnungen auf dem Scheug-Areal (Urnenabstimmung vom 30. November 2025)
www.uetikonamsee.ch
November 30, 2025 at 2:03 PM
riis-settlement.bsky.social
We’re honored to announce that Riis is a 2024-2025 grantee of the Mother Cabrini Health Foundation! This will support our Pregnancy & New Parent Program in providing new parents w/ the support they need to give their children the best start in life. We're grateful to MCHF for this partnership!
January 22, 2025 at 7:48 PM