softrock40 at Yahoo! Groups

Re: Has anyone used the Radio Shack isolation transformers ?

sv1eia — Wed, 10 Feb 2010 09:12:35 GMT

IMHO the non-liner phase/gain differences that will be introduced between two of those transformers, regardless of their bandwidth capability, makes them

Re: Has anyone used the Radio Shack isolation transformers ?

sdrcrazed — Wed, 10 Feb 2010 08:30:34 GMT

Thanks for the link. That pretty well answers my question. There'll be a couple of those transformers in my future tomorrow.

Where to purchase the kits?

g8voip — Wed, 10 Feb 2010 07:20:35 GMT

Hi Dave, The SoftRock40 is the original version dating back a few years now and obsolete. The current range of kits are available from Tony Parks, KB9YIG and

Re: noise on ssb

David SANCHEZ — Wed, 10 Feb 2010 06:59:10 GMT

Hi! Someone know where could I buy a softrock40? Didn't find...Help please. 73's de Dave F5SDD

Re: noise on ssb

Alan — Wed, 10 Feb 2010 06:42:04 GMT

... From: "Å¾eljko seleniÄ‡" Subject: Re: [softrock40] noise on ssb ... I do not expect that a box will make any difference. Can you use another computer?

Re: 6.3RXTX

Alan — Wed, 10 Feb 2010 06:41:45 GMT

... From: "Dave and Connie" Subject: [softrock40] Re: 6.3RXTX ... It seems the maximum from a Softrock does vary a little. PSK does need a linear output, make

Re: Has anyone used the Radio Shack isolation transformers ?

Jeff Blaine AC0C — Wed, 10 Feb 2010 05:50:16 GMT

Check out the data on a variety of transformers done by Jack Smith at Clifton labs. Top notch work there. And it includes the RS transformer.

Re: Has anyone used the Radio Shack isolation transformers ?

k5nwa — Wed, 10 Feb 2010 05:48:16 GMT

... Correction, I'm speaking of the ones they sell to isolate stereos. It might not be the one you are talking about. Cecil k5nwa < www.softrockradio.org > <

Re: Has anyone used the Radio Shack isolation transformers ?

k5nwa — Wed, 10 Feb 2010 05:37:17 GMT

... I vaguely remember that when tested they were pretty good to about 80+KHz, they have been used for years to isolate the I/Q outputs of the SoftRock to help

Re: Has anyone used the Radio Shack isolation transformers ?

sdrcrazed — Wed, 10 Feb 2010 04:52:02 GMT

"The package said, Impedance: 50Ω (input) and 70Ω (output) (I think)." The ohm symbols didn't work. This should say... The package said, Impedance:

Has anyone used the Radio Shack isolation transformers ?

sdrcrazed — Wed, 10 Feb 2010 04:40:24 GMT

I noticed over at Radio Shack this afternoon that they sell 1 to 1 isolation transformers for $4 each. They're very compact. Specs (RS Website)... 1:1

Re: 6.3RXTX

Dave and Connie — Wed, 10 Feb 2010 03:16:44 GMT

... Bob, I set mine up using the instructions in the PA Output Test - Scope section of http://www.wb5rvz.com/sdr/RXTX_V6_3/12_paf.htm and I see around 20vPP on

Re: SR Lite II Cap substitution? Tip for building...

aa9wqham@... — Wed, 10 Feb 2010 02:19:29 GMT

To be sure I get the right caps in the right place I get out the magnifier and mark the caps on the paper strip check the values and the quantity against the

Re: More mysteries for a newbie

aseatanner — Wed, 10 Feb 2010 01:32:45 GMT

Just for the record: I measured the voltage from the two 9V alkaline batteries I have used (like the ones used in smoke alarms)but which no longer drive the

Re: Softrock-inspired SDR

Bruce Tanner — Wed, 10 Feb 2010 00:37:20 GMT

Yes, I miss quoted the model, I guess. It is an 'Aspire One' with Win XP, 160 Gig HD. Not sure of the CPU speed I will have to check that as I understand there