Author Topic: PDW Signal lowering  (Read 1456 times)

Erikz

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PDW Signal lowering
« on: 14 Sep 2020, 09:11:59 »
Hey!

I've managed to make my PDW get signal. Now I start with 94.3%.. waiting 10 minutes and then goes to 80.4% step by step...

How can I stop it from moving?

Discriminator

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Re: PDW Signal lowering
« Reply #1 on: 15 Sep 2020, 09:36:25 »
The solution: improve the input signal.

For a detailed answer, you have to provide more information.

- What type of scanner do you use?
- Does it have a discriminator output?
- What type of signal are you monitoring?

Erikz

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Re: PDW Signal lowering
« Reply #2 on: 02 Jan 2021, 08:15:30 »
Oh sorry!

I use the RTLSDR dongle, it does have a discriminator 1.

I am monitoring pocsag.

Erikz

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Re: PDW Signal lowering
« Reply #3 on: 02 Jan 2021, 08:38:26 »
I guess it is something with PDW, because it can be at 70% and then I reopen and get 95% with good info again

Discriminator

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Re: PDW Signal lowering
« Reply #4 on: 10 Jan 2021, 20:00:20 »
If you start PDW, the signal indicator always starts at 95%. It then stabilizes to the actual signal quality. So, it's not PDW but  the quality of your signal.

Please also check https://www.discriminator.nl/faq/index-en.html - 'Discriminator Outputs', Question 10 and https://www.discriminator.nl/paging/index-en.html - 'If you use a DVB-T stick, things get even more complicated, as you also have to finetune the frequency correction and gain. In many cases, using a DVB-T stick does not lead to a stable solution.'