[aprssig] [ui-view] APRS Radiation sensor

[Lynn W. Deffenbaugh (Mr)]

Ok, I've seen the new Xnns weather parameter for radiation, and I've 
noted the previously existing requirement that not only weather station 
symbols be checked for weather, but also water and flooding symbols may 
contain weather.

I've also noted discussion elsewhere in the thread that overlay R on 
symbol H be used for a "Radiation Detector".

Merging these two things together, should an RH symbol also be checked 
for the presence of weather data, possibly to include the X, or is the 
RH for something completely different.  If RH symbol packets should be 
scanned for weather data, then should it be specified in weather-new.txt 
for completeness?

Also, is there any station yet transmitting the Xnns under either a 
weather (any _) or Radiation Detector (RH) symbol?

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

On 3/23/2011 3:27 PM, Bob Bruninga wrote:
> I  updated the APRS12 addendum to this standard for Radiation.
> http://aprs.org/aprs12/weather-new.txt
>
> Bob, Wb4APR
>
> -----Original Message-----
> From: ui-view at yahoogroups.com [mailto:ui-view at yahoogroups.com] On Behalf Of
> Bob Bruninga
> Sent: Tuesday, March 22, 2011 3:28 PM
> To: 'TAPR APRS Mailing List'
> Cc: 'IZ6RDB'; 'Guido Trentalancia'; jjesson at voyager.net; 'sylvainfaust';
> ui-view at yahoogroups.com
> Subject: [ui-view] APRS Radiation sensor
>
> How about this for Radiation Telemetry:
>
> - 3 digits.  Either in a WX report or in a Telemetry channel.
> - In a weather report the identifying byte would be "X".
> - So X123 would be 12 times 10^3rd nanoseverts
>
> Using Tapio's idea (below) of 2 digits of precision and one digit of decade.
>
> Bob, WB4APR
>
> -----Original Message-----
> From: aprssig-bounces at tapr.org [mailto:aprssig-bounces at tapr.org] On Behalf
> Of Tapio Sokura
> Sent: Thursday, March 17, 2011 4:40 PM
> To: TAPR APRS Mailing List
> Subject: Re: [aprssig] Clarification of APRS weather station data flow.
>
> Hi,
>
> On 03/17/2011 05:29 AM, Scott Miller wrote:
>> Also, unsurprisingly, there's been a big surge of interest in Geiger
>> counter interfacing.  Bob, can we get a standard for sending ionizing
>> radiation levels in weather reports?
> I'm not Bob, but I'm sticking my spoon into the soup anyway after a
> little IRC chatting.. so here goes: Anyone who's familiar with radiation
> levels knows they can hugely vary in scale. So using a plain, say
> three-digit, number isn't going to scale very well (i.e. 001 = 1 uSv/h,
> 999 = 999 uSv/h).
>
> I'm suggesting the following: three digits, where the first two are the
> significant digits (mantissa) and the last one is an exponent. Base unit
> could be nSv/h, nanosieverts per hour (Sievert is the SI-unit for
> ionizing radiation dose equivalent).
>
> If abc represents the digits, the resulting radiation level would be
> calculated using the formula ab * 10^c nSv/h. A few examples:
>
> 000 = special case for "reading unavailable"
> 010 = special (theoretical) case of 1 nSv/h or under
> 020 = 2 nSv/h
> 150 = 15 nSv/h
> 990 = 99 nSv/h
> 321 = 320 nSv/h
> 123 = 12 uSv/h
> 654 = 650 uSv/h
> 456 = 45 mSv/h
> 987 = 980 mSv/h
> 989 = 98 Sv/h
> 999 = special case for 99 Sv/h or over
>
> So that's the digit part sorted out, now we just need a letter
> identifier/tag for it..
>
>     Tapio
>
> _______________________________________________