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write your own review of the Yaesu MH31.
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WV4I
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Rating: 3/5
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Feb 4, 2009 15:35
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Needs help 
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Time owned: more than 12 months
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This mike, out of the box, needs the W4RT OBP mod, to get the "punch" needed for a mobile rig, or even a base operation, at least when used with the FT-857D. This is a bit of a tricky mod, and I would recommend having W4RT do it, unless you have VERY good soldering skills, leave no bridges, etc.. Once the mod is complete, you have the option of normal or enhanced audio via the slider switch on the back of the mike. The other item well worth the $$$s on the FT-857D is the 2.4 SSB filter, which works in receive, AND transmit if desired, really makes the FT-857D sound great along with the OBP mod.
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DL7ISA
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Rating: 5/5
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Jun 23, 2008 22:41
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Reliable 
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Time owned: 0 to 3 months
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The MH-31 I write here about, came as original supplied Handheld Microphone with my new Yaesu FT-817ND:
I never got Coments with that (mentioned above) Combination of Mic and Radio like I was sounding great, outstanding, fantastic, marvelous or such but even when my Signals are weak, I am well readable and usually I get 5x Reports. I think thats what this Mic was made for and it does a great Job, therefore I rate it 5.
What I like is that the Cable on the Bottom of the Mic is removable, wich means if I accidently damage the Cable during transport or portable Operation, the repair is much easier done.
The Tone Switch (rear button) makes a big difference and is very usefull.
(The only thing I didnt like is, this Mic is not LOUD enough for me but thats my Problem because I usually dont speak LOUD.)
73 to all Friends
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KB2NAT
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Rating: 5/5
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May 10, 2008 16:46
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i get unsolicited compliments about this mike 
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Time owned: more than 12 months
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Over a period of many months, I read quite a few reviews of the yaesu FT-897 and FT-857. One of the things that stuck out were the positive comments about the good mike sound. This was actually one of the reasons I bought the rig. I spent years in both the broadcasting and music industries and was not expecting or wanting to produce a studio SSB sound on the ham bands. But after reading the complimentary remarks (and thinking that I didn't want to spend MORE money than necessary for a transceiver) I purchased the FT-897. Its not unusual to be complimented on the sound of the mike. The mike has certainly not been a disappointment and it does what it's supposed to do quite well.
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AA5TB
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Rating: 5/5
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May 9, 2008 09:12
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It matches the FT-897D it came with fine. 
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Time owned: 0 to 3 months
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The MH31 microphone came with my Yaesu FT-897D rig. I find that the number 2 position for the switch on the rear of the microphone sounds the best for my voice. I've always received good reports and I've listened to it on FM when my son talked to me and it sounded good. On SSB I've listened to myself on another receiver with headphones and it sounded fine. My voice does not carry well but it seems to drive the microphone and rig fine.
I do not have any RF feedback problems to cause distortion and I would not blame the microphone if I did.
Also, I'm mostly a CW operator so take this review for what it's worth ;-)
73,
Steve Yates - AA5TB
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N5XTR
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Rating: 2/5
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Mar 24, 2008 23:04
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It was free.. 
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Time owned: more than 12 months
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It came with my FT-857D. Audio reports were good on FM and okay on SSB...have tried many audio settings with this mic and nothing helps. It sounds "okay". Well it was free with the rig, it's not a Heil.
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KC0VEU
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Rating: 1/5
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Oct 23, 2007 21:05
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chinese crap 
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Time owned: 0 to 3 months
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This is the microphone that came with the radio.
I have had many QSOs and contacts, but on the occasion someone tells me that my audio is horrible, that it sounds like I have rf on the mic. Some people say that my audio is bad, yet understandable and tolerable.
It is a shame that Yeasu could not furnish a decent mic.
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G8JNJ
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Rating: 2/5
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Sep 14, 2007 04:14
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Muffled audio 
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Time owned: 3 to 6 months
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This microphone was supplied with my FT-897D.
Unfortunately the frequency response is not suited to my voice, which seems to have a peak at around 800Hz.
Position 2 gives the best results, with the low frequencies being reduced; however the speech quality still sounds muffled.
I did some investigation with ‘Spectrum lab’ running on my PC. I believe there is a fundamental problem with the design of the slotted vents on the face of the microphone. This seems to cause standing wave patterns, which put ‘notches’ in the frequency response. You may notice this if you compare the variation in speech quality when you speak directly into the front of the microphone, from the sides, or from above or below. Each position gives a different tonal quality.
I tried a few different microphone inserts before realising this problem. So I now use a different hand mic or boom headset with electret capsules, which give me much better audio reports.
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DM7IC
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Rating: 5/5
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Feb 18, 2004 15:11
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Best for the Yaesu FT1000MP Mark5 HF Transceiver 
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Time owned: 3 to 6 months
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I tried some other Mics with my FT1000MP Mark5 Field: Kenwood MC80,Peiker Fistmic and 2 Sadelta Echo Master Plus. The Mic which came with the Transceiver, the MH31 sounded best. On its back, there is a small switcher with 2 discrete Positions. I used the Position one, where is much more bass and highs in the Audio than in Position 2. Got the best sound. That Mic isnt that loud but for that there is a Speechprocessor in the Radio. No need for the Yaesu MD200 Mic for FT1000. MH31 on FT1000MP Mark5 Field sound very best.
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