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Reviews Categories | Microphones for ham radio | Yaesu MH31 Help

Reviews Summary for Yaesu MH31
Yaesu MH31 Reviews: 22 Average rating: 2.9/5 MSRP: $41 Euro
Description: Original Handeld Mic
Product is in production.
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SV1WS Rating: 2/5 Oct 6, 2017 16:16 Send this review to a friend
sv1ws  Time owned: more than 12 months
This mic have 184OM on mic element and is
very difficult to work well with resistance and
capacitors in parallel and series. No solved the

KD7WPJ Rating: 1/5 Sep 20, 2017 10:36 Send this review to a friend
Defective  Time owned: more than 12 months
MH-31 came with FT-817ND. A lot of correspondents complained about audio quality. Some of them mentioned about RFI or bad ground. Finally, microphone stopped work at all. DC resistance is still OK (around 600 Ohm), but no audio at all.
W2RS Rating: 4/5 Sep 15, 2017 08:53 Send this review to a friend
Works well with Orion II  Time owned: more than 12 months
I have several mics that I use with the Ten-Tec Orion II, including the MH-31.

What I like about the MH-31 is that it is virtually immune to RF, which is an issue here on some bands where I am using an end-fed antenna.

With the Orion II, Position 2 sounds better than Position 1. However, as some reviewers have mentioned, it still has a muddy bass sound. The cure for this is simple: switch to Position 1 and adjust the TX EQ in the Orion II to -14 dB. Good, clear SSB audio.
KD2JF Rating: 2/5 Aug 21, 2017 07:04 Send this review to a friend
Poor audio quality  Time owned: more than 12 months
This Mic came with my FT-847 two decades ago and It came with my FTDX-1200 a year ago. Very poor audio quality on SSB and only OK on FM. The bad thing is it comes with many Yaesu radios and unless the owner tries different mikes he will never realize the true audio quality of his transceiver. Its a shame Yaesu makes great radios and saddles them with this mic.
GM1SXX Rating: 1/5 Jul 2, 2016 06:27 Send this review to a friend
Horrible!  Time owned: more than 12 months
The MH-31 stock mic that comes with the FT817 does the radio no favours at all. On SSB it's muddy, muffled and unpleasant. I'd give it a zero, except that it does have some redeeming features... it's fairly ergonomic. I'm going to take that well-trodden path that many others have walked,.... rip out the dynamic mic capsule and replace it with an electret type. I was always convinced the mic was lousy, but having recently tried the 817 with a cheap electret mic instead, I now *know* the muffled dull audio really is all down to the MH-31.
K4DES Rating: 0/5 Mar 9, 2016 07:00 Send this review to a friend
UGH!  Time owned: more than 12 months
This horrible microphone uses phone cabling to connect it to the radio. It has never worked right, been back to the factory with no audio for repairs. Cable connections are the weak link.
M0HDX Rating: 5/5 May 8, 2015 16:12 Send this review to a friend
Works with MKV Field  Time owned: more than 12 months
The Yaesu MH-31 microphone works great with my yaesu ft-1000mkv field, Not a single day goes by without someone saying how well the two go together and my audio sounds great. I tried the heil goldline, pr-20,various headsets and a uher but always went back to the MH-31 microphone because it sounded so much better.After spending some time messing around with the internal eq in the mkv i finally got it sounding how i wanted with nice rounded audio that is punchy and clear.
K7LZR Rating: 5/5 May 7, 2015 23:01 Send this review to a friend
Its not as bad as that....  Time owned: more than 12 months
I have two of these - they came stock with my FT-817nd radios.

They have plenty of audio drive - this has been verified by looking at the output signals from the FT-817 on an oscilloscope and also on a calibrated HP model 8920A service monitor. In all cases the radios easily met rated average output power with normal speech and proper mic gain settings. Honestly people, adding so-called speech processing etc. to these mics - at least on the FT-817 - just makes them sound too punchy and somewhat annoying to listen to.

These mics are also quite rugged, and the ability to disconnect the cord at the mic itself is nice.

I also like that they have button style mic hangers rather than a loop hanger. The loop hangers are nice for hanging on nails, screws, etc. but they seem to get in the way a lot and they bend or break.

In my case at least, I find no serious faults.
M0KFO Rating: 1/5 May 7, 2015 00:38 Send this review to a friend
Replace with MH-67  Time owned: 0 to 3 months
Another 1/5 of here.

This is an awful dynamic mic (nothing dynamic about it) that is supplier as standard on the FT-450D.

It's muffled, picks up non existent noises and generally gets you the sort of unsolicited audio comments that you're not looking for.

Replace it with the mic that came with the original FT-450, the MH-67 before they cut corners.

It isn't expensive, about 28 in the UK.

If you get the MH-68, set the gain to high and the eq to zero.
MM0HRL Rating: 1/5 Apr 2, 2015 10:09 Send this review to a friend
It's better than - not much...  Time owned: 0 to 3 months
I don't think this pretty lousy mike deserves a 2 here - a company like Yaesu must know more than enough to produce a mike - or buy it in more likely - that makes a better job on expensive radios than this hopeless thing can do.

Its audio is unsharp, muffled and on SSB does the rig no favours. On FM it functions "okay". But it's quiet and soft in tone. Mine came with my new FT-857D several weeks ago - and I've replaced it with the Japanese-made MH-59 mike - which replicates most if not all of the radio's functions on its rather complex keypad - which is partly gimmick but also partly very useful.

Every user will decide for himself where the breakpoint is between those two opposites.

The '59 gives good quality brighter audio, far better than the standard job. But its curly cable seems to be unshielded - so RF can be an issue if your installation isn't perfect in that respect.

I've used basic dynamic mikes aplenty over the decades and found some which suited the radio very well giving good lively audio, and others like this - but I've not yet had a mike that sounded worse than the MH-31 on SSB.

If you have an FT-857D with this as your only mike I'd suggest you borrow a MH-59 to assess it - I doubt you'll be happy with the MH-31 once you've returned the 59 to its owner.

The downside is that it's not cheap - too expensive for being a mass produced plastic microphone - with an element/capsule that in all likelihood costs pennies rather than pounds - but there's no denying it works much better than the original that this review's about.
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