[TheList] Fwd: Tait FENZ Selcall - Meaning of Status Messages

Thu Feb 3 18:30:49 AEDT 2022

Damn I wrote that awhile ago haha.  What a clever guy, I'd forgotten all 
about that.

Pager LOS is Loss of Signal  (I don't know how this works)

Key Cabinet seems to be when the key cabinet alarm activates/deactivates.

PGR RetOS is Return of signal

BGLR is burglar alarm on the station activating.  The station probably 
has a normal burglar alarm (with landline/cellular for sending as all 
burglar alarms have) but an output is likely connected to the station 
radio so in effect they have a redundancy of knowing when a station 
alarm has gone off.

The labels on the left of the pipe (  | ) are for stations, on the right 
are the K codes.

Stations use 5tone, whereas the appliances use 13tone for transmitting 
and 5tone for receiving.  The 8200 can only decode 5tone, so it's 
decoding the stations 5tone and acknowledgements, but only decoding the 
acknowledgement back from firecomm when an appliance does a call.

An example would be (this is from a logfile from 2017 - so this may not 
work now if REGN206 has changed vehicles from then - at the time it was 
running as HAMI411)

C5331F1100C (REGN206 K1)   [this is the 13tone from the appliance to 
firecomm]

C55331  (REGN206 K1 Ack ACK)   [this is the 5tone acknowledgement back 
from firecomm]

so the 8200 will decode the C5533 as being REGN206, and the 1 as being 
K1 ACK

Now for a station,

184411         Hamilton Turnout
would decode on the radio as being 18441 Hamilton Station and the ending 
1 is for a Turnout (IE lights activate, doors open, that type of thing)

The radio doesn't know if it's decoding an appliance OR a station, so I 
matched the Status labels so it doesn't matter, you see what's happening.

The type of selcall is different between 5tone and 13tone too - this way 
uses the same data as the Seldec units that Anzac Comms used to sell.  
So if you have one of those, you can put the same info into the 8200 and 
decode correctly... it's NOT the same format as FENZ use, so if someone 
was naughty and transmitted tones, it wouldn't actually do anything on 
FENZ side.

So to preemptively answer a possible question - could you use the 13tone 
instead of 5tone?  probably, in theory, however Taits are limited to 300 
entries in the receiving list so you'd (very) quickly fill that up with 
only a handful of appliances and the corresponding status.  This was the 
most efficient way of doing things.

Richard.

On 3/02/2022 7:49 pm, BJ wrote:
> Hi all,
>
> Just read a guide that Richard posted a while back on how to setup a 
> TM8200 to decode the 5-tone acknowledgement string from comms.
> (https://radiowiki.org.nz/pipermail/thelist_radiowiki.org.nz/2019-October/003891.html)
>
> He mentions that the status codes to program are as follows...
> Value 	Label
> 0 	Station | K55
> 1 	Turnout | K1
> 2 	Pager LOS | K2
> 3 	KeyCbnt | K3
> 4 	Pgr RetOS | K4
> 5 	Manual | K22
> 6 	Pwr Fail | K7
> 7 	Low Batt | K7
> 8 	Pager | K77
> 9 	Brglr | K9
> 10 	K88
> 11 	** PRIORITY **
> 12 	Routine
> 13 	K99
> Can anyone help me with the meaning of the abbreviated words? Some of 
> them are pretty obvious but some like "Pgr RetOS" and "Brglr" are not. 
> I do know what the K codes mean (from the radiowiki national data) but 
> I'm not sure if they're related or not.
> If someone could point me in the right direction that would be great!
> Cheers,
> BJ
>
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