DSD For Windows Basic Setup - Easy Instructions Noobs Guide

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Re: DSD For Windows Basic Setup - Easy Instructions Noobs Gu

Postby Allan » Thu Jun 20, 2013 4:05 pm

Hi Alan,Yes I think that's my problem getting the downloads correct,I did download that program sdr or similar name I plug the dongle into the usb port connect an aerial then move the frequency along that waterfall pattern but no audio comes in just white noise..,I know a few guys have given me some instructions but the last time I downloaded something like zadig on my computer it went hay wire.In actual fact I still have something called Delta ?? That keeps coming up on my screen..Have you bought one of those hand held radios that will receive normal digi transmissions?
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Re: DSD For Windows Basic Setup - Easy Instructions Noobs Gu

Postby m0lsx » Thu Jun 20, 2013 4:53 pm

The problem with the handheld scanners receiving Digi, is that they are made for the American market & the Americans prefer different digi modes to us. So they work, but not on the most popular digi modes used here in the UK.
Buy a database from Kimmy JS19 via http://ukscanningdirectory.co.uk/
Or do Google search of this forum via https://www.google.com/cse/home?cx=partner-pub-6291336405621919:2662881632
73 De Alan (M0LSX.)
http://www.qrz.com/db/M0LSX"
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Re: DSD For Windows Basic Setup - Easy Instructions Noobs Gu

Postby moj » Sat Jun 29, 2013 3:24 am

well Sammy just to add to the last message I sent I treated myself to one of the cheap rtl dongles off the ebay link but still stuck in the same hole and can,t get anything on dsd or dmr decoder :)

heres a question for you tho what type of external connector would be needed to adapt the dongles antenna connection to an outside antennas external bnc aeriel connector etc ??
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Re: DSD For Windows Basic Setup - Easy Instructions Noobs Gu

Postby sammy3417 » Sat Jun 29, 2013 9:17 am

Hi mate,

Dont forget you need software called virtual audio cable..that is a must!! acts like a discriminator tap http://software.muzychenko.net/eng/vac.htm

The cable you need .. I have one http://www.ebay.com/itm/MCX-MALE-TO-BNC ... 0672507494
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Re: DSD For Windows Basic Setup - Easy Instructions Noobs Gu

Postby Alfie » Sat Jun 29, 2013 11:19 am

i have had dsd working with a discriminator tap but am now trying it with the dongle. at the moment dsd is hearing the data but i cant for the life of me figure out how to get it to come out of the speakers ? i am using virtual audio cable too ? if someone could do a step by step guide for using a dongle with dsd like this dsd guide here it would be good :thumbup:
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Re: DSD For Windows Basic Setup - Easy Instructions Noobs Gu

Postby moj » Sat Jun 29, 2013 5:48 pm

I,m in the exact same boat and getting nothing through my usb dongles and its so frustrating when everybody else seems to get it working so easily :)

I,ve installed virtual audio cable Sammy and still it acts as if the dsd and dmr decoder aren,t getting any input from the usb dongles yet they work fine to listen to on sdr sharp program itself m8 ??

also unticked the filter box so it sees the dongle as a tap aswell .
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Re: DSD For Windows Basic Setup - Easy Instructions Noobs Gu

Postby M3TSY » Sat Jun 29, 2013 6:23 pm

Ah this is the step where I think I got stuck at first but figured it out after a while.

First of all, if you have been using DSD with a discriminator tap then you will understand changing the sound settings as DSD listens on the default record device and plays back on the default out device, to run DSD with a dongle you'll also need VBCABLE which is free from here http://vb-audio.pagesperso-orange.fr/Cable/index.htm

Then you need to install the drivers as explained here http://www.rtl-sdr.com/tag/virtual-audio-cable/ so VBC can run the audio from your SDR to DSD and then back out through your speakers.

Open SDR sharp and in Audio (in the left panel) change Output to VB CABLE input and uncheck the filter audio box and it should be coming through your speaker when VOICE is happening. As you are now using DSD with SDR to adjust the inlv you need to adjust the AF Gain in SDR.

On a side note after using DSD with my discriminator tap on a scanner and moving on to the cheap SDR dongle I can say 100% that the dongle's are far much better at decoding, at least in my case and it's nice to be able to get the "=" signs down to virtually zero.
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Re: DSD For Windows Basic Setup - Easy Instructions Noobs Gu

Postby moj » Sat Jun 29, 2013 7:39 pm

woohoo Thankyou very much M3TSY I,m finally getting somewhere with this dsd program and written in laymans terms so other members can get the jist of it ;)

ok I followed all your instructions and now I can see the data being received in the dsd window and also the dmr decoder window is now getting data aswell which is a good sign :)

now its trying to decode and descramble all the garbled speech time , ive tried with adjusting the af gain slowly but no change and I set the dsd -fr switch up on dsd and the plus sign is on the left so I,m on the right tracks , on sdr sharp I,ve changed the sample rate to 48000 with the latency left at 100.

my frequency step is set at 12.5 kHz ,my filter bandwidth is set at 12500 , and my filter order is set at 400 and filter type is blackman.

when I click on the configure box at the top fr filter is set as 420mhz-875m , lna enable box is ticked , mixer gain box is ticked , the if filter is set at 200 kHz , and the if gain box is at 0 and the bias t box is left unticked .

if I open volume mixer box which is part of the laptops bottom right hand side I have all the gains to full ?

is there anything else I,m missing do you think ? :)

I just want to degarble the speech
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Re: DSD For Windows Basic Setup - Easy Instructions Noobs Gu

Postby DX Jim » Sun Jun 30, 2013 7:16 pm

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Re: DSD For Windows Basic Setup - Easy Instructions Noobs Gu

Postby moj » Sun Jun 30, 2013 7:57 pm

haha ! I,m guessing you have got your settings working fine then jim ;)
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