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Hum when recording with RH10

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FergusF

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Hi all,

I did 2 voice recordings recently with my RH10, the battery was low so I used the mains power while recording, I used MM-BSM-9 binaural microphones. I could hear a distinct hum while monitoring the interview using headphones and the hum was even worse when I uploaded the recording using SS 3.2. Why am I getting this hum? can anyone help?

I wish you all a very happy Christmas and a great 2006!

Regards,

Fergus :mellow:

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Don't use the mains power for recordings from analog sources. This introduces the hum (although way quieter when recording via line-in). Use battery power instead, whether internal and/or external.

Thanks Greenmachine, does recording use up a lot of battery power? I have been charging my RH10 for over 6 hours and it still says "charging". Does the charging message dissapear when the unit is fully charged of will it keep showing the charging message?

regards & thanks,

Fergus

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It should interrupt the charging process automatically after up to about 3.5 hours. Anything significantly above could damage the battery and/or recorder. You're not charging via USB, are you?

Recording obviously requires more power than playback, but you should still get a few hours out of a fully charged battery.

Here are two excerpts shamelessly stolen from the user's manual:

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It should interrupt the charging process automatically after up to about 3.5 hours. Anything significantly above could damage the battery and/or recorder. You're not charging via USB, are you?

Thanks Greenmachine, no, I am charging using mains power but it is still showing as charging so I have disconnected it.

Fergus

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Whoa Fergus you might wish to carefully inspect the battery for venting damage and damage to the recorder. Also, make sure that the battery contacts are clean. Charging continuously for 6 hours will cause the battery to overheat, swell, release gases, and possibly burst. I would replace the battery ASAP.

Cheers

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