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RXTX Ensemble and my computer situation...

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  • Trygve Sjothun
    Hi All, My RXTX Ensemble arrived in the post today and I am very keen to get QRV. I am worried though that my computer situation will be inadequate to use the
    Message 1 of 60 , Mar 14, 2014
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      Hi All,

      My RXTX Ensemble arrived in the post today and I am very keen to get QRV. I am worried though that my computer situation will be inadequate to use the rig. It is a bit frustrating as I thought that at least with the mac I stood a chance. I have an atom based netbook that I mentioned in a previous post and also a mac mini 1.83GHz dual core with 2GB of ram, and also a Raspberry Pi. I was hoping that between them all I might be able to get it all working but my searches for a solution are not very encouraging. Unfortunately I can't afford to buy another computer right now. Does anyone have some ideas about what I can do. I am a complete newb to SDR in practical terms though I have been interested in it since I first heard of it in 2009-ish and I am as keen as mustard about the technology. Any help would be very gratefully welcomed.

      73,

      Tryg

      de EI7CLB, GQRP - 13150


      --
      "A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects."  — Robert Heinlein
    • Andre de Jong
      ... Van: Sid Boyce sboyce@blueyonder.co.uk [softrock40] Verzonden: 14 mei 2014 12:36 Aan: softrock40@yahoogroups.com Onderwerp:
      Message 60 of 60 , May 14 10:10 AM
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        --- Oorspronkelijk bericht ---

        Van: "Sid Boyce sboyce@... [softrock40]" <softrock40@yahoogroups.com>
        Verzonden: 14 mei 2014 12:36
        Aan: softrock40@yahoogroups.com
        Onderwerp: Re: [softrock40] Re: softrock40

         

        I bought one some time ago until I can get around to fixing a problem on my Marconi signal generator.
        I have been thinking of adding a MAR-6 amplifier or 2 to it for PA testing.

        With the Marconi I was able to test a 10W and the K5BCQ 20W PA standalone.
        The 10W PA I built about 2 decodes ago - 1mW in for 10W out and accidentally I increased the sig gen output and saw a 45W sine wave output with no flat topping.
        73 ... Sid.

        On 14/05/14 04:17, allgyer@... [softrock40] wrote:
         

        Disclaimer: I have no financial interest in this company or product.

        For those interested in pursuing this a bit farther, here is an excellent, low cost signal generator.

        AD9850 DDS Signal Generator Module 0 -30MHz Sine / Square Wave Frequency AD9851

         



        I have one and it worked great until I inadvertently put the RXTX I was testing into transmit. It apparently does not react well to trying to swallow a couple of watts! I have a replacement and a spare coming and the first mod I will make is to put a 20 dB pad in the output to protect it!

        This generator puts out +4 dBm in a very clean sine wave on any frequency from 0-30 MHz. There are several similar models on eBay in you search on "DDS Signal Generator" some at an even lower price. I can vouch for this particular one as I have used it and tested it. But I also would not hesitate to buy some of the other AD9850-51 based products advertised.

        It will take a couple of weeks because it is coming from Hong Kong. But I can vouch for it as a cheap and extraordinarily useful product.

        Warren Allgyer
        9V1TD


        -- 
        Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
        Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
        Senior Staff Specialist, Cricket Coach
        Microsoft Windows Free Zone - Linux used for all Computing Tasks
        

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