Talk:AFSK Paging Link

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Note for the file I listed, I could not put it in samples otherwise the wonky functions of this site would have replaced the previous person's sample..

I fixed it for you. I know this website is far from user friendly, its a long-running issue that I am trying to figure out. Blame Mediawiki. I added your sample to the page. --Cartoonman (talk) 09:07, 10 September 2016 (NZST)

Thanks Cartoonman, wav files are almost impossible for me to upload via tablet. I don't understand why ogg files are also impossible for analysis. Somebody asked me "please use wav files as to ease analysis".

Ywsia1 (talk) 9/11/16 1:50 AMAmplitude Modulation EDT.

I'm also certain i've herd afsk paging links in the 450 - 460 Mhz range as well and should possibly be noted in signal description,

As far as .ogg files go, it uses more compression so there's technically " data loss "
of what could be important information in decoding samples.
as far as adding more samples , if your referring to adding it to the wiki ,
look for the == Samples == section on the editing page and insert new samples under there.
--Mbeam (talk) 23:25, 11 September 2016 (NZST)

-- In Indiana, IPN has billions of licenses using AFSKAudio Frequency-Shift Keying modulations for POCSAG. This modulation is found throughout all bands, up to 929 Mhz, (of course 72-76 MHzMegaHertz (MHz) 10^6 Hz being the prime frequencies.) where regular Flex and standard POCSAG stands out. I added an additional link, I might add more. Ywsia1

yup, thats fine. The samples aren't all necessarily decodable by ear since they're all technically compressed mp3/ogg files anyway. Samples that are for decoding purposes should be IQQuadrature signals form the basis of complex RF signal modulation and demodulation, both in hardware and in software, as well as in complex signal analysis. files, but since they're harder to come by, if one only has mp3/ogg, then thats what they'll have to use to try to decode. --Cartoonman (talk) 01:53, 16 January 2017 (NZDT)

Im going to get a picture of what the second recording's spectra looks like (on actual FMFrequency Modulation), havent gotten a pic yet. My Wireless mic has the ability to do so and would be good for this page. --Ywsia1 (talk) 2/9/2018, 17:01 EST

ive managed to find a Dutch POCSAG encoder along with some other resources to generate some artifical I/Q and audio clips of these waveforms, (NOT transmitted, but only on the soundcard/VB), this way it can be easier to tell what the user is actually looking at instead of having to find one on the waves. I will post as many images/samples as I can from these resources. --->Ywsia1 Yalek W (talk)

Who in the bloody ass hell keeps adding bogus and unrelated images to these pages? The big fat image on the bottom is the SATEL V.21 variant. It gives off the fax-beeping FSKFrequency-Shift Keying tones. The rest of Fax machines' modes are all V. series and do not conform to Bell202 and POCSAG. The only close variant is v.27ter and that belongs on the PURC page as PURC uses similar modulations in their waveforms.

oh and, he added the audio file....Why...

Please delete 423. whatever and whoever posted it. We do not need misleading information. -- >Yalek W (talk)

Now its deleted, thankfully. -_-. -- >Yalek W (talk)

I would love to have a more in depth procedure on how to turn regular signals into AFSKAudio Frequency-Shift Keying signals. Bill (talk)

Hey bill, If you want to talk about it with me on discord that would be great. Yalek W (talk)

Sometimes I hear Morse code mixed in to the transmissions. One Morse code trasmission translated to WNFS264WPGR776. Can anybody make sense of this? Bill (talk)

They are morse code identifiers tying in to which FCC licenses they belong. WNFS264 = a callsign. These callsigns belong to two PW radio service licenses. FCC advanced license search is the tool to use here. Quite confusing though as its not listed as the right type of service as its transmitting pager data. the C services would be the right type for here.

-- >Yalek W (talk)

Yes, very odd indeed... Bill (talk)