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Old May 30th, 2008, 10:18 PM   #1
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AT 1800 wireless - subtle noise when switching receivers

Has anyone who has the Audio Technical 1800 series receiver (I have the dual-channel one, but assume it's going to affect the single channel model too) noticed a subtle noise, a muted pop of perhaps a fifth of a second in duration, when the system is made to leap to the other receiver?

Say I'm recording on just one channel, and the transmitter and/or receiver move in such a way that it detects the other receiver is getting a better signal, and switches over- that's when the noise occurs. If I'm within about 5 metres, I am able to replicate it over and over again by rotating the receiver away- you see the LED marked 1 next to, say, the aerial on the left hand side, switch off, and the LED marked 1 next to the right hand aerial come on.

If no-one recognises this problem, I'll see if I can't rustle up a recording.
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Old May 31st, 2008, 07:04 AM   #2
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Phil,
I too use the AT1800 dual and have to say that no, I've never heard any noise when I switch from 1 receiver to the other. For weddings (as an example) I have 1 mic on the lectern and 1 on the groom. I have them set so the lectern mic is on first and leave the grooms mic off until the officant starts talking. I then switch the receiver to BOTH. Now that both mics are running I may or may not switch off the grroms mic (#2) during the ceremony depending on the "commentary" from him and the bride. Anyway the point is I've never had a popping noise or any other kind of noise when I switch the mics on or off at the receiver.

Don
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Old May 31st, 2008, 12:41 PM   #3
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Phil I assume you are referring to a slight glitch when the rx switches diversity channels. It used to be quite obvious once you noticed it on some of the Beyer (re-badged Trantec S5000) stuff.
Even after Beyer serviced it.

You get what you pay for with radios. Is it very loud or just annoying because you are aware of it?
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Old May 31st, 2008, 07:58 PM   #4
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I should import it into an analyzer and measure it properly.

I became aware of it using the DPA 4061 mic, in a quiet room, so the spurious noise was only competing with very mild room tone. Against dialogue, I doubt it'd show its head. Of course, once you notice it, it's always there. I was out in the country lanes near my house, doing some walk-and-talk with the wireless and the Indicam Pilot sled, and I'd be lieing if I said I noticed.
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Old June 1st, 2008, 07:30 AM   #5
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Hello Phil,

Because I'm aware such things can happen, i listened for it her in the quiet of my recording studio when i reviewed the system last year and didn't hear it.

I have heard that (on other systems) you can sometimes hear this sort of thing when the tx and rx are at their maximum range, but you said 4-5 meters.

I'd say it's either a unit in need of a tweek or there's something else in your environment that's causing the problem.

Regards,

Ty Ford
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