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Author Topic: IC-7000 Hand Mic low audio - fixed  (Read 601 times)
AB5N
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Posts: 15


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« on: May 23, 2007, 02:01:55 PM »

Greetings all-

I'm the guy who does the upgrade on the HM-151 hand
mic that comes with the IC-7000. If you have one, you know it has low audio.
Wouldn't you like to set the mic gain at 50% and have full SSB power out with
no compressor and sound great on FM too?
My second revision upgrade is just out. All the details are on my website.

www.7000mic.com

It's cheap, quick and sounds superb! I even offer kits.

Thanks and 73's

Bob-AB5N
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K0BG
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Posts: 9879


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« Reply #1 on: May 24, 2007, 05:51:54 AM »

Interesting. I have three IC-7000s, two of which are installed in mobiles. One is brand new, the other was the first one shipped by AES, and has been installed mobile for well over a year. I have never noticed the mic gain was low, and in fact, it is a little too hot even when set at 25%.

From my 35 years of mobile experience, most of the problems seen as low mic output levels has been a result of not using the microphone correctly. Electret element microphones require the user to "close talk" the mic, directly into the element. Talking across the element, or from distances over 4 inches or so, will greatly reduce their output.

The other side of the coin; increasing microphone gain also brings up the background noise, which is already a problem in most mobile installations. An average mobile is easily 30 to 40 dB louder than your average living room.

Adding great insult is the use of compression. I have never used it mobile, and have never found it necessary. The most important attribute any operator should strive for, especially in a mobile setting, is clean and clear audio. Adding gain is not the way to approach that end.

Personally, I wouldn't touch this mod.

Alan, KØBG
www.k0bg.com
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AB2MH
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Posts: 263


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« Reply #2 on: May 24, 2007, 12:14:05 PM »

You've posted this before.

I own two 7000's and they sound fine.

Why are you spamming eHam?
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N5DXL
Member

Posts: 43




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« Reply #3 on: May 25, 2007, 05:14:58 PM »

Personal I'm very happy you reposted as I couldn't
remember your web address after installing a new
hard drive.
My mic is on it's way.

73,
Tom - N5DXL
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N0ZLD
Member

Posts: 84


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« Reply #4 on: May 29, 2007, 09:23:39 AM »

Personally, I would touch this mod and highly recommend it.
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