64 - 1700MHz Software Defined Radio for £13

[G4ASR]

64 - 1700MHz SDR using a DVB USB stick that costs only £13.

CW, LSB, USB, AM, NFM, WFM and more...

Details are here ..... http://www.m9t.co.uk/


Here's some of the 70MHz stations I received on CW and SSB on 14 July 2012 - no preamplification, antenna straight into the tv dongle.


ES3RF at 1900km distant .....

http://www.youtube.com/watch?v=E4Kca0Yuv2U&feature=plcp


OK1TEH working G3LVP .....

http://www.youtube.com/watch?v=Wgf8WDHy ... ontext-chv


It works, and for £13 its great as an SDR between 64 - 1700MHz.

73 David
_________________

[M3HXE]

Ive just read G4VXE's blog post about these.Then found this post (it must be a sign)! I plan to get one buy the end of the week (when funds have been transfered into paypal).

Im not at all computer orintated but these and the info avalable about them looks quite easy.

Simon.

[G0WTZ]

I do know my way around computers and it took me 2 hours to get to the point I could pick up a signal on 2m ssb and as soon as a neighbour keyed up it was swamped

But good fun none the less and I suppose a Beagleboard and one of these would make a good mobile scanner

[M5AKA]

Doesn't that use the Elonics E4000 tuner chip ?

Elonics went into adminstration several months ago and I understand the chips are no-longer made, see
http://www.metispartners.co.uk/FileAccess.aspx?id=165

I guess it's a case of buy the units while you still can.

73 Trevor M5AKA

[GM7GAX]

Doesn't that use the Elonics E4000 tuner chip ?

Elonics went into adminstration several months ago and I understand the chips are no-longer made, see
http://www.metispartners.co.uk/FileAccess.aspx?id=165

I guess it's a case of buy the units while you still can.

73 Trevor M5AKA

Still the odd one about with the Elonics E4000 chip

this list is occasionally updated HERE

a compatabilty list HERE

It is also worth checking if protection diodes at the antenna are present as more than a few dongles are missing these...ESD can easily ruin these..

Its a bit of a minefield now

[G7BZD]

which particular dongle would i need to look out for.
and where do i purchase the dongle from ?

Thanks

Phil

[G4ASR]

the details are in my first posting ... just look for the link

[ON4TA]

I have been experimenting with an USB receiver stick originally made to receive DAB/DAB+ broadcast. It is based on the Realtek 2832U complex demodulator IC and has the Elonics E4000 tuner IC.

Installation details as per G4ASR/G3WER info above. I use SDRSharp software. I am pleasantly surprised by the frequency accuracy, any offset can be corrected for in software. Initially the screen was a bit jerky, I believe the software is CPU hungry or it is the way the graphics are inplemented. I use a P4 3GHz machine. I find that resizing the application window to 'frequency span' only (i.e. no waterfall) helps.

On 70MHz I could receive signals down to -115dBm, or S2. A bit low for NBFM to decode, however, at -109dBm (S3) it was already much better. Beacons/CW signals were decoded at -115dBm, even into the noise level playing with the software filter settings.

So if you are interested in 4m and want to check out local signals this is a cheap way to start out!

The WFM setting allows to decode those OIRT signals during sporadic-E.

Another USB receiver stick using the R820T tuner IC will give frequency coverage from 24MHz to 1766MHz, so even 10m and 6m for cross band are within reach.

Enjoy experimenting!

73, Phil ON4TA

[G0NBD]

Check out the R820T based dongel , this has replaced the e4000 and providers better coverage
now round 23 MHz to 1500 + Mhz , seems to use the same A/D chip, so direct sample , un changed .

Prices are back to normal as well , some showing at £3-50p !

73 -G..