Recent Posts

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1
PDW Development / Need flex 1600 page recordings
« Last post by robertcb on 20 Mar 2019, 14:57:28 »
Hello.

I need for WAV PCM recordings, preferably 48kHz 16bit in FLEX1600 modulation with the text
"Pager test message 123 ABC abc"
for CapCode 0034929 and 0000001

And also recording an information message that reaches all pagers in range.


Robert.
2
Discriminator Outputs / Re: Swissphone DE920
« Last post by Discriminator on 28 Feb 2019, 11:08:59 »
Yes, probably. The DE920 has a TA31145 receiver IC.

Unfiltered audio is available on pin 9. You should disable baterry saving by pulling pin 13 ('BS') high.

-Rene
3
Scanners and receivers / MOVED: Swissphone DE920
« Last post by Discriminator on 28 Feb 2019, 11:06:00 »
This topic has been moved to Discriminator Outputs.

https://www.discriminator.nl/forum/index.php?topic=924.0
4
PDW Support / Re: Help with Error in PDW
« Last post by Discriminator on 28 Feb 2019, 11:02:05 »
Quote from: welshmonitor on 27 Feb 2019, 13:26:16
If anybody else has the same type of problem, then check that your pc has permissions to allow PDW to access your microphone.
This was the problem with mine, soon as I changed the permissions from no to yes, PDW started working perfectly.

Interesting problem. Thank you for sharing the solution!

-Rene
5
PDW Support / Re: Help with Error in PDW
« Last post by VidarParry on 27 Feb 2019, 21:27:24 »
Wow - didn't even know you could turn mic permission off and on! Well done finding that one:-)

The usual cause (in my experience) of poor POCSAG decoding from a discriminator tap is low radio signal strength or quality. If you are sure the RF quality is good, then to get the best result you need the PDW USB interface, but you should be getting at least some successful decodes.

Cheers
...Steve
6
PDW Support / Re: Help with Error in PDW
« Last post by welshmonitor on 27 Feb 2019, 13:26:16 »
Managed to finally sort out the problem & get PDW working.

If anybody else has the same type of problem, then check that your pc has permissions to allow PDW to access your microphone.

This was the problem with mine, soon as I changed the permissions from no to yes, PDW started working perfectly.

I can decode FLEX with no problem, but POCSAG still gives garbled text on the screen  :o I thought that doing the discriminator mod on my BCT15X would have cured this but unfortunately, it hasnt.  So that's the next thing to try and figure out.

FLEX = great decode
POCSAG = garbled decode (for now until I can find out why)

Thanks to those that helped with suggestions etc on curing the original problem  :)

Regards

welshmonitor
7
Discriminator Outputs / Swissphone DE920
« Last post by ukh on 23 Feb 2019, 16:12:05 »
Hi.Is it possible to make a Swissphone De920 pager into recipient in pdw??
8
Discriminator Outputs / Re: 'Is a resistor necessary?'
« Last post by VidarParry on 14 Feb 2019, 19:59:20 »
 ;D ;D ;D ;D ;D ;D ;D ;D
9
Discriminator Outputs / 'Is a resistor necessary?'
« Last post by Discriminator on 14 Feb 2019, 19:48:56 »
Today in my email, a question about the need to use a resistor in a discriminator output. My reply:

Is safe sex necessary?  ;)

https://www.discriminator.nl/faq/index-en.html - 'Discriminator Outputs', Question 6 -

'What's the function of the resistor?

Connecting or disconnecting an interface to the discriminator output might cause a short-circuit. The limiting resistor prevents the discriminator IC from being loaded or damaged. Further to that, it prevents your PC's microphone or line input from being overloaded.'
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Data Slicers and Interfaces / Re: 4-Level Data Slicer Repair question
« Last post by Discriminator on 10 Feb 2019, 12:37:38 »
Quote from: zonian149 on 26 Jan 2019, 15:36:28
Is it possible that I may have damaged one of them by picking it up while it was running since it did not have a plastic case around it.

I don't think it's your fault. One interface had a defective voltage inverter IC. The other interface had a 10 uF capacitor in the inverter circuit that has developed a  high ESR. These things can happen over time.

-Rene
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