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Re: LF: SDR programs

from [M0FMT] [Permanent Link][Original]
To: "[email protected]" <[email protected]>
Subject: Re: LF: SDR programs
From: M0FMT <[email protected]>
Date: Mon, 25 Jun 2012 20:58:03 +0100 (BST)
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Hi Bob
 
If you are directing that mail to me then you need to look at earlier posts.
 
However if you are a cheque book Ham then it will be of little interest to you.
 
You say dangle we say dongle..... :-0
 
These are TV front ends that use the SDR principle and plug straight into your USB port on your Lap top. Normally they are for recieving local digital TV and radio plus a FM band as well. They are available in the US and they can be made to tune from about 60megs to about 1.7gigs. If I need to tell you more please ask but this is all in public domain on the web (but not in Ham mags, at least not in UK). I have played with these things for about 6 months now and for a few quid (dollars) are fun. If you build a simple up converter with a say a 60meg LO guess what, you have an all band HF radio as well.
 
Oh and BTW I was not entirely sure what Tracy was getting at below?? We are talking 10 dollars not 300+dollars.
 
73 es GL Pete M0FMT IO91UX
From: "[email protected]" <[email protected]>
To: [email protected]
Sent: Monday, 25 June 2012, 19:34
Subject: Re: LF: SDR programs


 
Been Kinda out of any loop on this  
 
BUT
 
if what I read,, if I connect a TV tuner usb dangle witht he correct chip set
it will cover MF to HF using  an appropriate program. I use HDSDR with my SDR IQ
which I like for general reception. So by using the proper chip set HDSDR
will run that TV dangle as a HF radio
 
??
 
Bob K3DJC
 
On Thu, 21 Jun 2012 22:31:00 +0100 "Tracey Gardner" <[email protected]> writes:
Hello Pete
 
If we're talking about low priced SDRs, there is a relatively new kid on the block in the form of the Afedri SDR-Net from Israel.
It is what I will refer to as a "proper" SDR i.e. a direct sampling digital down conversion SDR.
It covers 100kHz to 30MHz, has a maximum bandwidth of 1.25MHz and has a LAN interface for remote access.
The best bit is that it costs just over £200 inc shipping and VAT.
 
You can find more details here
 
 
 
I've no connection other than being a satisfied customer.
 
73s Tracey G5VU
----- Original Message -----
From: M0FMT
Sent: Thursday, June 21, 2012 9:55 PM
Subject: Re: LF: SDR programs

Hi Mal
 
The whole reason these things are getting so much attention is the price and the fact they are independent of a sound card or A/D converter. They are not really suitable for or give any advantage on LF because you need an up converter in front. A Softrock SDR with a good sound card will out perform these sticks at MF/LF.IMHO I don't think its worth persuing to be honest. However I think with the DVB-T sticks people have been opening them up to look at the SMT chip marking if not sure. It looks like they don't erase the markings like some well known LF TX suppiers do. Oh and the software plug-ins are only for the RTL2832 chipset.
73 es GL Pete M0FMT IO91UX
 


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