Greetings I am possibly looking for a 2nd hand mcHF and, as a newcomer to the project, would very much appreciate any guidance you might be able to offer with regard to the different versions of board

I've looked all over for an answer to this without success. All of my radios aside from the mcHF use the tip for straight key the mchf uses the ring. This means that i cannot use my keys with the mcHF

Anyone have a circuit board for this modification? Ron De Silva made one for his modification (Post #880 dated 5/30/20) - I’d love to have a copy. Bill Reining WA6CTY

Mouser is your friend ;) https://www.mouser.com/ProductDetail/Analog-Devices/HMC480ST89E?qs=3izLlwrMQ7mMUNZC9%2F%252BI2Q%3D%3D&gclid=Cj0KCQjw2MWVBhCQARIsAIjbwoN3kt-soTE6CoDBewZmt1PwCpx9I3c9Pb2CaimYzze

Hi All If there is a vendor link for a bigger rotary knob for frequency tuning similar to the such IC7300 one ( diameter from 40 mm to 50 mm is OK) ?? Thanks for Help . 73's Nizar.

Looking for advice. Preferable location EU Thank you Alex LY4SA

Hi Fellow Hams my Uk call sign 2E0HSF if you could read my story and share and if possible donate to my go fund me page to assist in my recovery I would be grateful. best regards terry 73s https://www

Hi, My mcHF stopped to show SWR and Power level. On Receive I still can signal level with good accuracy. I checked T2 and T3 connections and they seem OK. Any pointers where I should look and check ne

Hi Here My latest Modds for the Rx Mixer to avoid transmodulation with strong Broadcast radio signals and then reduce spurious signals on the spectrum. I am very happy with , i posted here just for di

Hello again, My radio is now built, working, calibrated (PA and IQ) as advised, tested. It seems however that voice compression effectively reduces final Tx power (instead of actually increasing it).

Can we try an exttra roofing flter to limit local fm broadcasts not to interfere!! Rrgarrds Sarma vu3zmvv

Hello Guys! I'm wanna ask for help because my noise floor on the mcHF is pretty bad so far. For some reason one of the CBT3253 that switch the BPF went bad and I replaced both of them. I had checked w

Has anyone here had the opportunity to to compare these two rigs? Obvious differences are in the display size, gain control/s and built-in ATU, but what about hands-on? The mcHF has the benefit of bei

I have 2 HY28B displays, new. 2 I think work but not sure, and 2 3.2" displays, One new and the other I think works. $30 shipped. Pay pal is fine n5mf @ dfn . com -- Mark Flavin N5MF

Hi all I measured the outlet of the mixer alone with U1 + BPF Filter + U2 CBT3253C. There are practically no traces of IMD on the HF (IMD <-60db). ( HMC482ST82 Mmic not connected ) After connecting th

Should the the ACC connector (outer ring) be fully grounded on TX? Mine reads150 ohm when TX and that is to high to key my amplifier. Is this a menu thing? How do you guys go around this?

After weeks of field operation with my mcHF-with-autotuner, I was testing out a new antenna in my backyard when a few seconds into the third or fourth tuning cycle, the entire radio went dead. :-( I o

Hi everyone, Quite a while ago bought an mcHF kit including a case from m0nka. I am finally coming around to building it. I see that the instructions say that the RF shield needs to be manually modifi

When can a kit be ordered again that you can further assemble yourself. I see that the kit is now sold out. Ben PA3EPQ

Anyone have the picture and values for the bypass capacitors on the Version 7 board? Here is the pic I have but I forget the values of the caps. TNX Chuck