31 Mhz cordless phones

[MW6ZAN]

Hi i dusted off me old yupiteru 7100 today had a scan round other than the normal crap ham marine air i got quite a few hits on the old cordless phone band i havent monitored 31 Mhz for a good few years thought all had migrated to digital dect also not a lot of activity on uhf seems all now using digital format pitty but the barry store net is still analogue 453.7375 Mhz wonder how long before they migrate good listening 73.

[Mikel]

Hi i dusted off me old yupiteru 7100 today had a scan round other than the normal crap ham marine air i got quite a few hits on the old cordless phone band i havent monitored 31 Mhz for a good few years thought all had migrated to digital dect also not a lot of activity on uhf seems all now using digital format pitty but the barry store net is still analogue 453.7375 Mhz wonder how long before they migrate good listening 73.

Funny enough visited a friend in Caerphilly today with my Uniden 3500 and the store net is also still analogue on 453.100 tone 88.5 and heard a few old folks on the 31 Mhz old cordless phones discussing their ailments and medications - sounded just like the hams on 80M

[Admiral]

discussing their ailments and medications - sounded just like the hams on 80M

Oi!

That's me.

[scottyboy]

Any old cordless phone users I find is the older generation who are afraid of upgrading to modern technology. They will prob keep them until the family throw them out when clearing the house once they are gone.
I think the days of hearing young housewives on the phone to there bit on the side etc are gone!!
Ahhh those were the days lol

[Ant]

I used to pick up loads of cordless phones on my Ranger, thing is, if I wanted to, I could TX to them, which I never did. Usually just heard a load of old people talking crap to be honest.

[M6UCW]

Any old cordless phone users I find is the older generation who are afraid of upgrading to modern technology.

It may not be an issue of being afraid of modern technology. Some equipment has never really changed much over the decades especially where the changes affect the users experience.

How much of a change is there to the newer cordless phones that would make people want to change? It's not like mobiles that went from heavy bricks with monochrome screens to touchscreen smartphones that combine a variety of functions.

Plus a lot of newer stuff has so much technology that when it breaks, it's a mission to repair compared to older stuff - cars are an example where mechanics plug a laptop into the car to find out the issue.

There is also the old saying, "if it ain't broke, don't fix it".

[pmr446man]

Good to see there are some left.

[timbo]

I used to pick up loads of cordless phones on my Ranger, thing is, if I wanted to, I could TX to them,

Not unless your Ranger TX's on MediumWave ! The split frequency duplex on these phones was massive. Base was just above the top end of Mediumwave and Handset on 31Mhz. You would normally only pick up the handset tx while the person you could here was listening on 1600Khz. The reason why you can here the other caller is it's being picked up by the mic in the handset. However, the distant caller might pick you up, with the base sending your tx down the phone line -- naughty !

[Mikel]

I used to pick up loads of cordless phones on my Ranger, thing is, if I wanted to, I could TX to them,

Not unless your Ranger TX's on MediumWave ! The split frequency duplex on these phones was massive. Base was just above the top end of Mediumwave and Handset on 31Mhz. You would normally only pick up the handset tx while the person you could here was listening on 1600Khz. The reason why you can here the other caller is it's being picked up by the mic in the handset. However, the distant caller might pick you up, with the base sending your tx down the phone line -- naughty !

I know what you mean but your thinking of the old 47 Mhz phones, (still a few of these around here) that have the following frequencies and splits:

.............................Handset......Base

CORDLESS PHONE CH1 47.45625....1.642
CORDLESS PHONE CH2 47.46875....1.662
CORDLESS PHONE CH3 47.48125....1.682
CORDLESS PHONE CH4 47.49375....1.702
CORDLESS PHONE CH5 47.50625....1.722
CORDLESS PHONE CH6 47.51875....1.742
CORDLESS PHONE CH7 47.53125....1.762
CORDLESS PHONE CH8 47.54375....1.782

All frequencies in Mhz


The 31 Mhz phones have the following frequencies and splits:

....................................Base.........Handset

CORDLESS PHONE Channel 1 31.0375....39.9375
CORDLESS PHONE Channel 2 31.0625....39.9625
CORDLESS PHONE Channel 3 31.0875....39.9875
CORDLESS PHONE Channel 4 31.1125....40.0125
CORDLESS PHONE Channel 5 31.1375....40.0375
CORDLESS PHONE Channel 6 31.1625....40.0625
CORDLESS PHONE Channel 7 31.1875....40.0875
CORDLESS PHONE Channel 8 31.2125....40.1125

All frequencies in Mhz

So it is possible to talk to the 31 Mhz phone base unit with a Ranger and be heard (ask me how I know )

[Warden]

Cordless phones i have never heard at my location. But i do pickup a load of baby monitors that seem to pickup sounds from all over the house.

[Stealth]

Cordless phones i have never heard at my location. But i do pickup a load of baby monitors that seem to pickup sounds from all over the house.

Ive heard the odd but loud moan on more than a few occasions :..wink wink nudge nudge ,know wat a mean

[MW6ZAN]

Yes the good old analogue baby monitors on 49.900 Mhz always some interesting content if you listen long enough i think the majority are completely unaware and oblivious to how far these things tx 73 good listening.

[timbo]

I know what you mean but your thinking of the old 47 Mhz phones,

Well done ...... wondered who would be the first person to spot that !

[M0MTH]

Glad I've never entertained a cordless phone, for this reason..

And I personally find the idea of listening to baby monitors a bit weird? Each to their own though..

[RogerD]

Got more on the newer 40.68 band now than on the old 49.9 band which is all but dead these days