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Intermittent radio mic

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Intermittent radio mic

PostPosted: Sun Apr 10, 2011 10:28 pm
by shufflebeat
I've been, ahem, volunteered by my darling daughter (bless) to check out an intermittent fault (drop out) on a radio mic at her school. I've witnessed the fault a few days ago and it seems to be a definite cutting out rather than the odd missing syllable.

Not owning one myself I'll be guessing once I get beyond the usual. Can anyone describe any common problems or suggest what might be worth eliminating as a possible cause.

Muchos Grassy Ass.

Re: Intermittent radio mic

PostPosted: Sun Apr 10, 2011 10:36 pm
by dmills
Are they using more then one?
The assignment of frequencies if multiple mics are in use gets a bit complicated.

Check the aerials, can they see the stage, are they in reasonably free space? Undamaged?

Try turning the squelch down a bit.

Are they replacing batteries before each show?

So many possibilities.

Regards, Dan.

Re: Intermittent radio mic

PostPosted: Sun Apr 10, 2011 11:35 pm
by shufflebeat
Good start, that, you've just doubled my possible approaches. Cheers Dan.

Re: Intermittent radio mic

PostPosted: Mon Apr 11, 2011 9:27 am
by Mike Stranks
+1 on everything Dan's said...

... and don't overlook a non-radio-related cause... is the cable between the receiver and the desk consistently good?

... and to amplify Dan's comment on frequencies... check if the mic is UK-legal... if not could be a radio-frequency interaction with goodness knows what.

(See the JFMG website on what is UK-legal if you're unsure.)

Cheers! M

Re: Intermittent radio mic

PostPosted: Mon Apr 11, 2011 9:32 am
by DPoll
Once you've tried the above. If your still having problems, next step is to move the reciever physically closer to the Mic. Also buy the best batteries you can get hold of. Older Mics tend to not like even a small drop in voltage from the battery.

I used a crappy vhf Mic last year for a kids camp and didn't get much more than an hour from the battery before drop outs became common and that was with duracells and the receiver about 8ft from the Mic.

Re: Intermittent radio mic

PostPosted: Tue Apr 12, 2011 1:01 pm
by seablade
TSH-Tim wrote:
We stock Shure UHF premier series and YES if you hold them at the bottom they cut out.

I assume by premier series you are referring to the UHF-R series.

See my point two then.

Seablade

Who is pretty familiar with those mics among many others.

Re: Intermittent radio mic

PostPosted: Tue Apr 12, 2011 6:36 pm
by TSH-Tim
No i mean Shure UHF premier series ... UHF-R which is a load more money again :frown:

Re: Intermittent radio mic

PostPosted: Tue Apr 12, 2011 6:37 pm
by TSH-Tim
What they offered us was a joke to say the least....

Re: Intermittent radio mic

PostPosted: Tue Apr 12, 2011 7:22 pm
by seablade
TSH-Tim wrote:No i mean Shure UHF premier series ... UHF-R which is a load more money again :frown:

Got a link to these then? I assumed UHF-R as the word premier is in its marketing, but I don't think I have ever heard of a premiere series though. Maybe something specific to your side of the pond?

Seablade

Re: Intermittent radio mic

PostPosted: Tue Apr 12, 2011 8:44 pm
by TSH-Tim
Umm how odd after a quick look around a cant find anything... apart from some pictures :?

Here is a picture of the system http://truesoundhire.co.uk/services/radio-microphone-hire

there quite old but i'll google this a little more and find the info for you.

Re: Intermittent radio mic

PostPosted: Tue Apr 12, 2011 9:12 pm
by seablade
That is the Shure UHF series, the predecessor to the UHF-R series. And they were decent enough quality(Were at one time Shure's top of the line) that I would say that point 2 from above probably applies.

Seablade

Re: Intermittent radio mic

PostPosted: Tue Apr 12, 2011 9:22 pm
by TSH-Tim
Hence why its not on the site anymore then.... you can see the signal drop-out when your hand is round the bottom. They have also dont it thou.

Re: Intermittent radio mic

PostPosted: Wed Apr 13, 2011 1:47 am
by shufflebeat
Cheers, gang.

Plenty of food for thought there. I'll do my best to mention everything I've learnt from this post, while maintaining a nonchalont air of quiet confidence, of course.

In the interests of closure I will report back if and when he avails of the offer.