[TheList] Pager Decoding

Tue Jan 12 19:12:16 AEDT 2021

Is it a dedicated Ambo channel or are you getting it from the 157.950 
channel? I always had 100% on that one till a couple years ago and it 
dropped

On 12/01/2021 8:51 p.m., Brendan Sheehy wrote:
> Mine seem to stay on frequency pretty good.
>
> Always have 100% decode rate on my ambo one.
>
> The Flex requires a very clean signal.
>
> Get Outlook for Android <https://aka.ms/ghei36>
>
> ------------------------------------------------------------------------
> *From:* TheList <thelist-bounces at radiowiki.org.nz> on behalf of Craig 
> <cokekid at orcon.net.nz>
> *Sent:* Tuesday, January 12, 2021 8:25:37 PM
> *To:* thelist at radiowiki.org.nz <thelist at radiowiki.org.nz>
> *Subject:* Re: [TheList] Pager Decoding
>
> Something to be aware of Brendan - SDRs seem to drift with heat
>
> Find myself re-tuning the offset +/- a few Hz every couple of months. 
> Local decodes will start to degrade, or overall hit rate decrease. And 
> some end up with inability to correctly complete decode. (or drop the 
> likes of amb)
>
> Soon as I find the right offset or slightly off frequency to centre it 
> again using the PC, and transfer back to the Pi again. Away it goes again.
>
> On 12/01/2021 7:57 pm, Brendan Sheehy wrote:
>> Mine is all sdr with outdoor antenna
>>
>> Get Outlook for Android <https://aka.ms/ghei36>
>>
>> ------------------------------------------------------------------------
>> *From:* TheList <thelist-bounces at radiowiki.org.nz> 
>> <mailto:thelist-bounces at radiowiki.org.nz> on behalf of Radio Scanner 
>> <rs157950 at gmail.com> <mailto:rs157950 at gmail.com>
>> *Sent:* Tuesday, January 12, 2021 6:09:43 PM
>> *To:* thelist at radiowiki.org.nz <mailto:thelist at radiowiki.org.nz> 
>> <thelist at radiowiki.org.nz> <mailto:thelist at radiowiki.org.nz>
>> *Subject:* Re: [TheList] Pager Decoding
>> Whats the hardware setup you are using Brendan? Also 
>> internal/external Antenna? I just wonder if by using an outdoor 
>> Antenna im receiving too many towers and they are out of sync and 
>> causing corrupted data - thus the slightly lower decode rate?
>>
>> On 12/01/2021 12:47 p.m., Brendan Sheehy wrote:
>>>
>>> It will just need some very fine adjustments.
>>>
>>> I would highly recommend using the Line In not the Microphone as 
>>> windows does all sorts of funny things with the mics
>>>
>>> The 3 i’m monitoring vary greatly between 52 – 100%
>>>
>>> Cheers
>>>
>>> Brendan
>>>
>>> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for 
>>> Windows 10
>>>
>>> *From: *Radio Scanner <mailto:rs157950 at gmail.com>
>>> *Sent: *Monday, 11 January 2021 10:00 AM
>>> *To: *thelist at radiowiki.org.nz <mailto:thelist at radiowiki.org.nz>
>>> *Subject: *Re: [TheList] Pager Decoding
>>>
>>> What's your gain set at? Shouldn't need any more than 1/3rd the way 
>>> up the scale tbh. Hopefully someone else can chime in (Brendan?) and 
>>> tell us what their decode rate is as it would appear to be a system 
>>> problem rather than ours.
>>>
>>> On 10/01/2021 9:21 p.m., DogSecurity - Richard wrote:
>>>
>>>     Yeah could give that a shot. My plan was to move down south but
>>>     then the lockdowns happened and work got busy, so the place I
>>>     moved into is a temp setup (my aerial is the old VHF TV aerial
>>>     that noone has removed yet)
>>>
>>>     I assume the SDR on a crap aerial is the probable cause of a low
>>>     decode rate, however when listening to the channel, it appears
>>>     I'm decoding everything/nearly everything, hence ignoring the
>>>     decode rate.
>>>
>>>     Sent from a mobile device. Please excuse my brevity, punctuation
>>>     and spelling.
>>>
>>>     On 10 January 2021 4:16:58 pm NZDT, Radio Scanner
>>>     <rs157950 at gmail.com> <mailto:rs157950 at gmail.com> wrote:
>>>
>>>         Interesting you mention such a low decode rate Richard, I
>>>         noticed my decode rate drop a couple years ago from 99-100%
>>>         to 35-40%, despite my setup not changing in the past ~8
>>>         years. Uniden scanner with disc tap feeding a 2 level slicer
>>>         on the serial port. Another machine runs a SDR dongle on the
>>>         925 channel into a 2 level slicer from the audio output.
>>>         This channel's decode rate is anywhere from 20-25% with an
>>>         average number of messages. You might try using the command
>>>         line rtl_fm program instead of SDR# / SDRConsole.
>>>
>>>         On 10/01/2021 3:47 p.m., DogSecurity - Richard wrote:
>>>
>>>             Hey Mike,
>>>
>>>             I'd say that it's probably your volume levels. I've
>>>             never done the discriminator tap, which may have made
>>>             things harder, but getting the computer volume and
>>>             scanner volume just right is nothing short of a pain in
>>>             the ass.
>>>
>>>             Right now, I'm temporarily using an SDR dongle. The
>>>             volumes are (SDRsharp keeps crashing on me so I'm using
>>>             software called SDR Console) 100% output on the
>>>             software, 61% on the VAC input. This gives me an average
>>>             of about a 40% decode rate according to PDW 3.2b01,
>>>             however I physically seem to be decoding a lot of
>>>             messages so I'm ignoring that decode rate
>>>
>>>             Sent from a mobile device. Please excuse my brevity,
>>>             punctuation and spelling.
>>>
>>>             On 10 January 2021 2:04:22 pm NZDT, Mike Trump
>>>             <mtrump at orcon.net.nz> <mailto:mtrump at orcon.net.nz> wrote:
>>>
>>>                 Hi Guys,
>>>
>>>                 Happy New Year to one and all.
>>>
>>>                 I have a little query regarding pager decoding using the PDW software
>>>
>>>                 and I'm not sure if it's a setting that's wrong
>>>
>>>                 or the way I've set this up.
>>>
>>>                 For years I used this program to monitor the Fire Service FLEX paging on
>>>
>>>                 157.9500, using a Uniden UBC-9000 scanner
>>>
>>>                 via a discriminator tap I'd installed in it and it worked good as gold,
>>>
>>>                 until one day the scanner just stopped
>>>
>>>                 receiving anything at all (it's on the list of things to fix, once I get
>>>
>>>                 around to it).
>>>
>>>                 Today I tried the software again, just out of curiosity with a handheld
>>>
>>>                 scanner plugged into my laptop microphone
>>>
>>>                 input, I'm pretty sure I have all the audio levels correct and the
>>>
>>>                 software is running fine, but it won't decode anything?
>>>
>>>                 I got a few POCSAG messages but that was it, have I messed something up
>>>
>>>                 here?
>>>
>>>                 Does anyone else here use a setup like this?
>>>
>>>                   
>>>
>>>                 Cheers,
>>>
>>>                 Mike Trump.
>>>
>>>                 TheList mailing list
>>>
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