Here's a picture of HD Radio from C89.5 FM:
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| Affordable SDR for 64-1700 Mhz http://www.interceptradio.com/bbs/viewtopic.php?f=32&t=6143 |
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| Author: | nickcarr [ Mon Jun 04, 2012 5:28 pm ] |
| Post subject: | Affordable SDR for 64-1700 Mhz |
http://www.ebay.com/itm/EzTV666-USB-Sti ... 0786708241 I just ordered one of these but these are very popular right now. If you can swing the $28 pick one up. Combine this with DSD for Windows and you decode P25, X2-TDMA, MotoTRBO, etc. Will post screenshots when I get it (probably this weekend.) The technical details: http://sdr.osmocom.org/trac/wiki/rtl-sdr The free SDR software: http://www.sdrsharp.com |
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| Author: | Atomic Taco [ Mon Jun 04, 2012 11:18 pm ] |
| Post subject: | Re: Affordable SDR for 64-1700 Mhz |
How are you getting audio in to DSD? |
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| Author: | nickcarr [ Tue Jun 05, 2012 2:31 am ] |
| Post subject: | Re: Affordable SDR for 64-1700 Mhz |
Well, I have an Asus Xonar soundcard... and the WAVE device pipes it anywhere I select. (i.e. it has a WAVE output and a WAVE input.) If you don't have that kind of soundcard (I think only Asus and Creative provide the WAVE device -- my on-board Realtek does not) ... then you can use VAC (Virtual Audio Cable.) http://software.muzychenko.net/eng/vac.htm VAC is nice and you can try it out free -- but read about the demo limitations. You'll need to buy the full version. It's not that expensive and works really well if you don't have the above soundcard(s). The Asus Xonar soundcard is very nice though. Highly recommend over an on-board audio chipset. |
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| Author: | nickcarr [ Tue Jun 05, 2012 2:40 am ] |
| Post subject: | Re: Affordable SDR for 64-1700 Mhz |
Here's a cool video of pager decoding using the RTL-SDR and PDW: http://www.youtube.com/watch?v=ZFkk6rkCX40 Here's an example of P25 decoding with DSD: http://www.youtube.com/watch?v=MYCaRUqmNyQ This is kind of funny. A speed-trap... http://www.youtube.com/watch?v=YQ06zLTDnMo |
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| Author: | nickcarr [ Sat Jun 09, 2012 9:26 pm ] |
| Post subject: | Re: Affordable SDR for 64-1700 Mhz |
Here's a picture of HD Radio from C89.5 FM:
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| Author: | Atomic Taco [ Sat Jun 09, 2012 9:39 pm ] |
| Post subject: | Re: Affordable SDR for 64-1700 Mhz |
nickcarr wrote: Here's a picture of HD Radio from C89.5 FM No, this is a picture of an HD Radio at C89.5 FM:
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| Author: | nickcarr [ Sat Jun 09, 2012 11:57 pm ] |
| Post subject: | Re: Affordable SDR for 64-1700 Mhz |
Here's a cool screenshot of the 868.75 Mhz EPSCA trunk channel... Warning this is a *large* image... from my 27" monitor: 
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| Author: | nickcarr [ Thu Feb 07, 2013 8:17 pm ] |
| Post subject: | Re: Affordable SDR for 64-1700 Mhz |
FYI, in case anyone is interested to know, I picked up the latest generation of these RTL SDRs using the R820T chipset. Compared to the first generation (E4000) chipset, the difference is night and day. Much better gain and sensitivity than the older generation. The best part is that they're still very cheap. I got mine in 2 days for $22 shipped. http://www.ebay.com/itm/NEW-USB-DVB-T-R ... 0740293929 The stock antenna is garbage but it does sort of work. I just cut the cord at the antenna base and added a PL259. Plug that into my external R/S discone antenna and it works like a champ. The SDR# software has improved greatly too -- so it's the perfect compliment to the cheap SDR -- as it's free software. :) |
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| Author: | Rodentkj [ Fri Feb 08, 2013 8:22 am ] |
| Post subject: | Re: Affordable SDR for 64-1700 Mhz |
Funny. I was just thinking last night that I wanted to find this tread again and try it out with PDW. Can you post a picture of the antenna connection mod you did? Thanks. |
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| Author: | nickcarr [ Fri Feb 08, 2013 9:35 am ] |
| Post subject: | Re: Affordable SDR for 64-1700 Mhz |
Rodentkj wrote: Can you post a picture of the antenna connection mod you did? Not really, because all you'll just see is a PL259 connector. Just cut, strip and solder. It's not very difficult. :) There are several adapters you can get too if you'd rather go that way. MCX to F, MCX to BNC, MCX to PAL, etc. |
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| Author: | Rodentkj [ Fri Feb 08, 2013 9:57 am ] |
| Post subject: | Re: Affordable SDR for 64-1700 Mhz |
Ahh crap. I was looking at the wrong Ebay link. I see the more recent link has a picture of the antenna w/ cable along with connector details. |
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| Author: | Rodentkj [ Fri Feb 08, 2013 10:04 am ] |
| Post subject: | Re: Affordable SDR for 64-1700 Mhz |
nickcarr wrote: The best part is that they're still very cheap. I got mine in 2 days for $22 shipped. http://www.ebay.com/itm/NEW-USB-DVB-T-R ... 0740293929 Want to make sure this is the correct link. You mentioned 22 bucks, but the price in the Ebay link is $14.99 Free Shipping. |
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| Author: | nickcarr [ Fri Feb 08, 2013 10:23 am ] |
| Post subject: | Re: Affordable SDR for 64-1700 Mhz |
Yep. I got the upgraded shipping option. |
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| Author: | Atomic Taco [ Fri Feb 08, 2013 10:23 am ] |
| Post subject: | Re: Affordable SDR for 64-1700 Mhz |
Rodentkj wrote: nickcarr wrote: The best part is that they're still very cheap. I got mine in 2 days for $22 shipped. http://www.ebay.com/itm/NEW-USB-DVB-T-R ... 0740293929 Want to make sure this is the correct link. You mentioned 22 bucks, but the price in the Ebay link is $14.99 Free Shipping. |
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| Author: | Rodentkj [ Fri Feb 08, 2013 10:26 am ] |
| Post subject: | Re: Affordable SDR for 64-1700 Mhz |
Got it. Thanks. |
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