infra red

[Grange]

I have a universal remote. When the batteries get low, one of my devices
still responds to the remote, but another device doesn't.

What would be the cause of this? I assume there is the same amount of
electricity going to both devices since they both plug into the wall. Could
it be that the infra red receiving unit in one of the devices is simply of
lower sensitivity than the other one?

 

[DA]

responding to http://www.electrondepot.com/australian/infra-red-52877-.htm
DA wrote:

Look on the bright side - in the days of ultrasonic remotes

....

Learning something new every day. Ultrasonic remotes? Never heard of this
type until today. Turn out that's how they flipped channels in the 70s
I wonder if some fine tuned whistles could also work on those? Like a 70s
version of TV-be-Gone?

 

[keithr]

responding to http://www.electrondepot.com/australian/infra-red-52877-.htm
DA wrote:


...

Learning something new every day. Ultrasonic remotes? Never heard of this
type until today. Turn out that's how they flipped channels in the 70s
I wonder if some fine tuned whistles could also work on those? Like a 70s
version of TV-be-Gone?

I used to enjoy walking through the local David Jones TV department
jangling a bunch of keys, watching their display TVs switch to random
channels.

 

[F Murtz]

I used to enjoy walking through the local David Jones TV department
jangling a bunch of keys, watching their display TVs switch to random
channels.

the squeak of closing blinds used to switch them off.

 

[Phil Allison]

"Rheilly Phoull"

Then some can recall when the remote was connected with a cable !!

** Nothing wrong with that - just follow the cable to find the lost remote
!!

The one fitted to mid 60s Krieslers had brightness, volume and channel
up/down - it even had a small speaker for private listening ( like a drive
in ) and a mini jack for an earpiece.

The turret tuner in the set was driven around by an AC motor and stopped at
pre-set positions, each channel had its own fine tune control. On the front
panel were 12 indicator lights to show which VHF channel was on.

Channel surfing during commercials was brilliant innovation.


.... Phil

 

[F Murtz]

Then some can recall when the remote was connected with a cable !!

Threw one of those out three weeks ago when moving (manufactured just
about when they stopped using valves)

 

[JW]

Some things have crap IR remotes - my Sony VCR needs the remote to be
accurately aimed at point-blank range.

In the end I gave up and bought a DVB-T recorder.

Look on the bright side - in the days of ultrasonic remotes, a lorry going
down the street applying air-brakes used to turn everyone's telly off.

Were those the remotes that had tuning forks in them? I remember having
one of those, but I didn't think they were ultrasonic.