Searching \ for 'Radio Pager' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/index.htm?key=radio+pager
Search entire site for: 'Radio Pager'.

Truncated match.
PICList Thread
'Radio Pager'
1999\01\31@061229 by David Duffy

flavicon
face
Hi everyone,
A customer has given me a small radio paging console to possibly modify.
It contains a simple 27MHz transmitter and keypad/display driven by a 16C55.
These units are normally used for small businesses and have a very short
range.
The pocket pager has an 18 pin PIC, a piezo and a single digit LED display.
I need to make the console a bit more user friendly and add a couple of new
functions. Has anyone seen these units around or played with them ?  The PIC
in the console just keys the 27MHz for data transmission.  If someone knew the
format used I could do some easy mods. The data rate is quite slow but does
not
look like anything obvious to me.  I have captured the data waveforms for
various
key combinations but can't figure out the format.  The origin looks Asian
and I am
led to believe that they are low in cost.  Can anyone offer any advice on
this ?
Regards...
____________________________________
David Duffy,   Audio Visual Devices Pty Ltd
Ph: +61 7 38210362   Fax +61 7 38210281
spam_OUTAVDTakeThisOuTspamuq.net.au  Unit 8, 9-11 Trade Street
Cleveland, Qld, 4163, Australia.
____________________________________

1999\01\31@070535 by paulb

flavicon
face
David Duffy wrote:

> It contains a simple 27MHz transmitter and keypad/display driven by a
> 16C55.

> The pocket pager has an 18 pin PIC, a piezo and a single digit LED
> display.

 First and single most important question: Are they code protected?
--
 Cheers,
       Paul B.

1999\01\31@074727 by g.daniel.invent.design

flavicon
face
David Duffy wrote:
>
> Hi everyone,
> A customer has given me a small radio paging console to possibly modify.
<<cut>>
> key combinations but can't figure out the format.  The origin looks Asian
> and I am
> led to believe that they are low in cost.  Can anyone offer any advice on
> this ?                        *D:\pic\pic archive 6  *D:\pic\pic archive 6

And will the possible customer be prepared to pay for LCD etc + a
"reasonable" markup ?
--
Steam engines may be out of fashion, but when you consider that an
internal combustion engine would require recovery of waste heat by
transfer just before top dead centre then fashion becomes rather
redundant, USE STRATIFIED HEAT EXCHANGERS ! and external combustion.

You heard it first from: Graham Daniel, managing director of Electronic
Product Enhancements.
Phone NZ 04 387 4347, Fax NZ 04 3874348, Cellular NZ 021 954 196.

1999\01\31@122623 by Ravi Pailoor

flavicon
face
Hi David,

If the PIC is 16c55, then it is not 18 pin, it is 28 pin DIP 600 mil
package. Send me the data format and I will try to figure it out. give
me more details on the usage of the product.

Bye

Pailoor




David Duffy wrote:

{Quote hidden}

--
Chip Technologies
No. 70, 9th Main Road,
Mathikere,
Bangalore - 560 054.
INDIA
Tel   : +91-80-3362807
Fax   : +91-80-3369451
Email : chiptechspamKILLspamvsnl.com

1999\01\31@213825 by Nicholas Uloth

flavicon
face
At 09:15 PM 1/31/99 +1000, you wrote:
>Hi everyone,
>A customer has given me a small radio paging console to possibly modify.
>It contains a simple 27MHz transmitter and keypad/display driven by a 16C55.
>These units are normally used for small businesses and have a very short
>range.
>The pocket pager has an 18 pin PIC, a piezo and a single digit LED display.
>I need to make the console a bit more user friendly and add a couple of new
>functions. Has anyone seen these units around or played with them ?  The PIC
>in the console just keys the 27MHz for data transmission.  If someone knew
the
>format used I could do some easy mods. The data rate is quite slow but does
>not look like anything obvious to me.

Probably POCSAG, though if it's old enough there are several other slower
protocols possible too.


>I have captured the data waveforms for
>various key combinations but can't figure out the format.  The origin
looks Asian
>and I am
>led to believe that they are low in cost.  Can anyone offer any advice on
>this ?

What's the make of the receivers ?  I spend several years in Asia working
on paging.


Nic

Nicholas Uloth
Industrial Software Partners Ltd
6 The Promenade
Mt Pleasant, Perth, WA 6153
Australia

Phone: xxx-61-0418-902-724
Fax:    xxx-618-9481-7202
eMail:  .....niculothKILLspamspam.....iohk.com



'Radio Pager'
1999\02\01@042600 by David Duffy
flavicon
face
David Duffy wrote:
> It contains a simple 27MHz transmitter and keypad/display driven by a
> 16C55.
> The pocket pager has an 18 pin PIC, a piezo and a single digit LED
> display.

Paul B. Webster wrote:
> First and single most important question: Are they code protected?

The 18 pin one in the pocket pager is - I just *had* to try !
I imagine the 16C55 in console is also protected - haven't checked it yet.
Regards...

____________________________________
David Duffy,   Audio Visual Devices Pty Ltd
Ph: +61 7 38210362   Fax +61 7 38210281
EraseMEAVDspam_OUTspamTakeThisOuTuq.net.au  Unit 8, 9-11 Trade Street
Cleveland, Qld, 4163, Australia.
____________________________________

1999\02\01@043024 by David Duffy

flavicon
face
David Duffy wrote:
> A customer has given me a small radio paging console to possibly modify.
> <<cut>>
> key combinations but can't figure out the format.  The origin looks Asian
> and I am
> led to believe that they are low in cost.  Can anyone offer any advice on
> this ?                        *D:\pic\pic archive 6  *D:\pic\pic archive 6

Graham Daniel wrote:
> And will the possible customer be prepared to pay for LCD etc + a
> "reasonable" markup ?

Not sure how much he wants to spend yet - depends on what he wants.
The existing keypad/display is OK.  He needs some remote buttons,etc
and possibly for it to auto-call certain pagers when triggered.
Regards...

____________________________________
David Duffy,   Audio Visual Devices Pty Ltd
Ph: +61 7 38210362   Fax +61 7 38210281
AVDspamspam_OUTuq.net.au  Unit 8, 9-11 Trade Street
Cleveland, Qld, 4163, Australia.
____________________________________

More... (looser matching)
- Last day of these posts
- In 1999 , 2000 only
- Today
- New search...