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Winradio g313e and Flex-Radio SDR-1000 Compared
Readers of rec.radio.shortwave may be interested to check out my lastest
posting on my SDR-1000 blog. I had the opportunity last week to do a "hands-on" comparison between a Winradio g313e receiver and my Flex-Radio SDR-1000. My friend and I concentrated on medium wave DX ability of the rigs, both for daytime DX with the locals at full power, and prior to sunrise for trans-Pacific MW splits. I will also soon be posting an entry unrelated to the SDR, but hopefully still of interest to radio enthusiasts-- the results of a direct "A-B" comparison between a Kiwa-hotrodded Sony ICF-2010 and an Eton E1 portable. The blog URL is below. 73, Guy Atkins Puyallup, WA USA www.sdr-1000.blogspot.com |
#2
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Winradio g313e and Flex-Radio SDR-1000 Compared
Guy Atkins wrote: Readers of rec.radio.shortwave may be interested to check out my lastest posting on my SDR-1000 blog. I had the opportunity last week to do a "hands-on" comparison between a Winradio g313e receiver and my Flex-Radio SDR-1000. My friend and I concentrated on medium wave DX ability of the rigs, both for daytime DX with the locals at full power, and prior to sunrise for trans-Pacific MW splits. I will also soon be posting an entry unrelated to the SDR, but hopefully still of interest to radio enthusiasts-- the results of a direct "A-B" comparison between a Kiwa-hotrodded Sony ICF-2010 and an Eton E1 portable. The blog URL is below. 73, Guy Atkins Puyallup, WA USA www.sdr-1000.blogspot.com If you are talking 5 ft on a side for your Wellbrook loop, then your results are similar to mine in that this seems to be all the ALA 100 will take without losing gain on the high end of the HF band. How do you bring the wires back to the ALA100? I came up with two possibilities: http://www.lazygranch.com/images/radio/3loop1.gif http://www.lazygranch.com/images/radio/3loop2.gif The advantage of 3loop2 is that you don't have wire that is perdendicular to the rest of the loop. Also, what is the spacing between your loop wires? Getting back to the SDRs, it would have been a more interesting review if an analog radio were thrown into the mix. Also saving some audio clips would be useful. |
#3
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Winradio g313e and Flex-Radio SDR-1000 Compared
Hi Miso,
My Wellbrook ALA 100 uses connections that are closer to what you show in your first image (3loop1), but the lead wires are fairly short. I have positioned the windings on one "side" of the vertical support pole, and the protective box with the ALA 100 inside is on the other side, as close as possible to the ends of the windings. I am using 3 inches spacing between turns, which is what Andy Ikin of Wellbrook recommended when I asked for his opinion on the project. On the SDR radio comparison, I didn't include any audio clips as the results were so close. I suppose the clips could have demonstrated the audio *quality* difference, but I didn't think of that. Maybe when I next on a DXpedition with John he and I can record something; we may be back at the WA coast next month. Come to think of it, I can probably get an audio clip from him of some DX we both listened to and recorded during the last DXpedition, such as 2YB Wellington on 783 kHz. I didn't included my modded R-75 analog receiver in the Winradio/Flex-Radio comparison, as I've already covered it in detail in former comparisons in the blog. 73, Guy wrote in message oups.com... If you are talking 5 ft on a side for your Wellbrook loop, then your results are similar to mine in that this seems to be all the ALA 100 will take without losing gain on the high end of the HF band. How do you bring the wires back to the ALA100? I came up with two possibilities: http://www.lazygranch.com/images/radio/3loop1.gif http://www.lazygranch.com/images/radio/3loop2.gif The advantage of 3loop2 is that you don't have wire that is perdendicular to the rest of the loop. Also, what is the spacing between your loop wires? Getting back to the SDRs, it would have been a more interesting review if an analog radio were thrown into the mix. Also saving some audio clips would be useful. |
#4
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Winradio g313e and Flex-Radio SDR-1000 Compared
Hi Brian,
Neither the Winradio or Flex-Radio models have any attenuation in the mediumwave range, nor on any other band that I know of. I do know the Flex-Radio folks clearly state "full sensitivity" throughout it's frequency range, and in some forum postings their representatives have mentioned "no attenuation" on any frequency a few times in the 2+ years I've followed the SDR-1000's development. My experience bears this out. During the comparison, John and I also did some checks in the tropical bands, and found the radios very, very similar on those frequencies too. In fact, at home I use the SDR-1000 much more for tropical band DXing than I do for medium wave, as the trans-Pacific stations are not heard regularly here. I'll mention, though, that once in a while I find my modded ICOM R-75 more sensitive on a DX signal, but the SDR-1000 often has better copy due to the cleaner sounding reproduction. Then there are rare times that the R-75 is clearly the winner on HF. It never hurts to have more than one receiver and more than one antenna around! Miso-- my comparisons to the ICOM R-75 are here and there throughout the blog. Two to look up, however, are from March 26th and April 16th, 2006. Regarding the ALA 100 loop: if I recall, Andy didn't think more than 3 turns would be of any benefit. I don't think he mentioned any max. total wire length. I wasn't planning on using more than 50 feet, as that's around the maximum recommended for a large single-turn loop (non-rotating :^) The nice thing about the ALA 100 model is the flexibility for experimenting with various shapes and dimensions. The new ALA 100s also have a higher dynamic range/IP3 preamplifier than the older Wellbrook models like the ALA 1530. 73, Guy "Brian Denley" wrote in message . .. It would be nice to see a comparison of shortwave comparison as some receivers are intentionally attenuated in the MW band. |
#5
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Winradio g313e and Flex-Radio SDR-1000 Compared
George, I don't have much experience tuning longwave, so I can't comment on
the two receivers used for this band. I do know there are some LW enthusiasts using the SDR-1000, but they're in the minority of Flex-Radio users like I am. Regarding the audio filter in the g313e, thanks for the reminder. We did try this facility with the Winradio, as well as the audio equalizer in the SDR-1000. I didn't think the Winradio's audio filter added any benefit to helping increase intelligibility of weak signals, over what the excellent DSP filter already provides. Perhaps we weren't using it in a way that helps dig out an ID on weak signals. The SDR-1000's equalizer definitely helps me to boost the critical midrange voice frequencies at times; I have a favorite setting I use about 80% of the time when DXing. For most of the receiver comparisons, though, we turned off both the Winradio audio filter and the Flex-Radio's audio equalizer. Guy "George Bell" wrote in message news:44be3386.16323640@news-server... The G313e performs well down to 10 kHz. See http://www.winradio.com/home/g313e.htm (click on Technical Specifications botton right, specs below 150 kHz) From my own experience, this is probably the best receiver for LF experimentation currently available. George |
#6
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Winradio g313e and Flex-Radio SDR-1000 Compared
Guy Atkins wrote: Hi Brian, Neither the Winradio or Flex-Radio models have any attenuation in the mediumwave range, nor on any other band that I know of. I do know the Flex-Radio folks clearly state "full sensitivity" throughout it's frequency range, and in some forum postings their representatives have mentioned "no attenuation" on any frequency a few times in the 2+ years I've followed the SDR-1000's development. My experience bears this out. During the comparison, John and I also did some checks in the tropical bands, and found the radios very, very similar on those frequencies too. In fact, at home I use the SDR-1000 much more for tropical band DXing than I do for medium wave, as the trans-Pacific stations are not heard regularly here. I'll mention, though, that once in a while I find my modded ICOM R-75 more sensitive on a DX signal, but the SDR-1000 often has better copy due to the cleaner sounding reproduction. Then there are rare times that the R-75 is clearly the winner on HF. It never hurts to have more than one receiver and more than one antenna around! Miso-- my comparisons to the ICOM R-75 are here and there throughout the blog. Two to look up, however, are from March 26th and April 16th, 2006. Regarding the ALA 100 loop: if I recall, Andy didn't think more than 3 turns would be of any benefit. I don't think he mentioned any max. total wire length. I wasn't planning on using more than 50 feet, as that's around the maximum recommended for a large single-turn loop (non-rotating :^) The nice thing about the ALA 100 model is the flexibility for experimenting with various shapes and dimensions. The new ALA 100s also have a higher dynamic range/IP3 preamplifier than the older Wellbrook models like the ALA 1530. No, the bad thing about the ALA 100 is the flexibility. Dammit, I keep fiddling and fiddling with it. ;-) Is Andy Ikins email address a secret? I don't see it on the website. 73, Guy "Brian Denley" wrote in message . .. It would be nice to see a comparison of shortwave comparison as some receivers are intentionally attenuated in the MW band. |
#7
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Winradio g313e and Flex-Radio SDR-1000 Compared
wrote in message ups.com... Is Andy Ikins email address a secret? I don't see it on the website. I just use the address on Wellbrook's home page, which is "info@" or "sales@" or similar. Guy |
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