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Re: Version 5 SoftRock, anyone?
N3WT
开云体育Tony, ? Are you kidding??? OF Course we are interested!?? Heck yes!??? I know I can’t order it yet, but I will when ur ready.? ? 73???? John, N3WT ? ? ? -----Original
Message----- From: softrock40@...
[mailto:softrock40@...]On Behalf
Of kb9yig
Sent: Monday, October 10, 2005 9:29 PM To: softrock40@... Subject: [softrock40] Version 5 SoftRock, anyone? ? Target kit price is in the mid-twenty dollar range for one set of |
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Re: brain freeze
KY1K
Steve, there is nothing sacred about the crystal case being grounded. There is no real need to solder it to ground.
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It's there for mechanical stability, since the crystal isn't laying flat on the board like it was made to do. If you leave it hanging in mid air, it will be somewhat more unstable, mostly just more susceptible to vibration being able to modulate the output frequency of the unit (microphonic). It looks like you can attach a piece of stiff wire to the xtal, and wrap it around the edge of the board to the underside and solder it to the ground plane there. I left mine hanging in mid air on long lead with nothing securing it because I intend to remove it later to facilitate the DDS install. It runs just fine, even though it's not quite technically correct. It also looks like you can drill the hole yourself, because it goes to teh ground plane on the backside of the board, there is no problem if the hole placement isn't as precise as the intended hole position was. Regards, Art At 09:15 PM 10/10/2005, you wrote:
Hi Steve, |
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Re: brain freeze
Stan Rife
开云体育??? Should be a hole there...was on my board. It is a
small hole though. Is there enough pad there to tack the ground wire to? You
might remove the Xtal,?bend a small L on the end of a scrap lead, then tack
that to the pad and reinstall the Xtal. Then you can solder it to the body of
the Xtal.
??? That feasible guys???
?
Stan Rife
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Version 5 SoftRock, anyone?
kb9yig
Hello Everyone,
I am working on a version 5.0 of the SoftRock receiver and want to see if there is interest enough to do a kit. The version 5.0 SoftRock oscillator will be at the fundamental frequency and depend on 90 degree phase shift network to generate the quadrature clocks for the QSD. This should give more flexibility in finding suitable crystals for various bands. The version 5.0 will consist of a two board stack with each board having dimensions about 1 inch by 1.5 inches. The bottom board of the stack with have a 5 VDC regulator, two voltage comparitors, the QSD circuit and the low noise audio amplifiers. The upper board will contain the oscillator circuit, the 90 degree phase shift network, and the BPF for the desired band. The two boards will be joined electrically by a row of header pins on the top board and the corresponding sockets on the lower board. A threaded standoff between the two boards will provide for mechanically holding the upper board to the lower board. Corner mounting holes will be provided on the lower board. External electrical connections to the lower board will include, supply voltage (9-12 VDC), an antenna input and a stereo audio cable for line-in connection to the PC. Target kit price is in the mid-twenty dollar range for one set of boards and components for a single band. Additional band kits might be on the order of $12 each with 80 meters through 30 meters and possibly 20 meters also covered. Please let me know if there would be any interest in such a kit. Thanks and 73, Tony KB9YIG |
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Re: brain freeze
steve
David H. Martin wrote:
Hi Steve,Thanks Dave its been a long day I didnt even think of doing that .Must be suffering from CRS disease Hi. Steve |
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It's Alive! Hot receiver
n3wtus
Had to jump in and say my SoftRock40 is working super too. What a hot
receiver! Finished the kit Sunday night, found the bad solder joint after coming home from work this Monday night. Har It sure sounded sweet when I heard signals for the first time. This is one amazing little receiver! I have been tuning around all evening copying CW on a busy 40 meters and looking for the weakest signals up next to strong signals. This SDR does work. This receiver is better than my Elecraft K1 by far. I hope there will be a way to expand the band receive range in the future. Thanks to all involved in making this kit available at such a reasonale price. 73 John N3WT |
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Re: brain freeze
David H. Martin
Hi Steve,
Mine has a smaller hole there. If yours doesn't have one, you should just solder the ground wire to the crystal lead that goes to ground. It's easy to tell which one that is by looking at the bottom of the board. good luck, Dave W5DHM --- steve <swells244@...> wrote: guys Im finally geting time to start my kit AND Ive __________________________________ Yahoo! Mail - PC Magazine Editors' Choice 2005 |
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Re: SoftRock40 Rocks!
Congratulations, Milt, you really whipped that baby out :-) It will be fun to hear about your experiences :-) TTYL
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Milt Cram wrote: Hi All, --
Regards, John ========================================================= email: k5jhf@... photos: files: web page: call sign: K5JHF ========================================================= |
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SoftRock40 Rocks!
Hi All,
Completed my SoftRock40 this afternoon. Took about 3 hours. I'm using the external power mod (78L05 in place of 2N3904, etc.).Current drain on a 9V battery is 29+ mA. My PC is a 1GHz Dell Optiplex GX200 with sound on the motherboard. Signals came through upon first powerup. I don't have an XG-1 to perform the image null. (Will borrow one tomorrow). I was able to make a null adjustment while listening to a fairly strong CW signal. Both gain and phase are very close to the middle of the range for a fairly good null. I don't expect much change when I use the XG-1 tomorrow. On to some on-air listening-- 73, Milt W8NUE Austin, TX -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.344 / Virus Database: 267.11.13/126 - Release Date: 10/9/2005 |
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Re: Software Problem
Edward Ringel
开云体育I’m no expert, but did you make sure that you installed the non-SoftRock 40 version of power SDR first?? I ran into similar problems when I mixed up the install. ? Good luck ? Ed AA1WZ ? -----Original Message-----
From: softrock40@... [mailto:softrock40@...] On Behalf Of edward_flwr Sent: Monday, October 10, 2005 7:02 PM To: softrock40@... Subject: [softrock40] Software Problem ? When I
click on the Power SDR icon on the Desktop, the SDR dialog box |
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Software Problem
edward_flwr
When I click on the Power SDR icon on the Desktop, the SDR dialog box
comes up and it has "Softrock 40 Edition". The loading bar moves from left to right. At about the halfway point of loading,another dialog box comes over the top of the SDR dialog box "unhandled exception". The loading stops. I have tried deleting the SDR programs and .NET Framework, and downloading again, and reinstalling them. No change - still "unhandled exception". Computer is 3.2 Ghz with 1Gb memory running win XP Home Edition. Any suggestions? My SoftRock-40 card is working on the bench. Bob Bartel |
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Re: Success with SR-40
EricJ
Hi Chuck,
XG1 works with just about any crystal you stuff into it. I occasionally use mine on 20 with a 14.060 crystal. The new XG2 uses exactly the same oscillator circuit for 80/40/20 coverage with a little 3 position rotary switch. They change the series cap value between bands, though. That would be easy to implement with dip pin sockets too. The only major difference between the XG1 and XG2, besides bandswitching crystals, is elimination of the LMC6482 op amp for a low battery detector. It never really worked for me anyway. I'm going to use it to build a second Accuprobe for use in a NoGaWatt once you do all the design work on yours. hi. BTW, I bought an Accuprobe and once I saw it decided a full-sized Altoids tin didn't qualified as a "probe". So I built all the parts on a slim piece of perf board and stuffed it in an aluminum cigar tube. Now it's a PROBE. hi. Pictures on my web site. Works great! Eric KE6US www.ke6us.com --- Chuck Carpenter <w5usj@...> wrote: Tony, --------------------------------------------------------------------~->
__________________________________ Yahoo! Music Unlimited Access over 1 million songs. Try it free. |
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SMT Parts Source and Experimenters Kits
KD5NWA
Below is a link to a company that I bought from to build up my parts
stock. They have a lot of SMT parts kits for a reasonable price. They
also have project kits with lot's of extra parts so you can experiment
making changes.
< > No fiduciary interest, just though to pass on a source of SMT parts.
Cecil Bayona |
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SR-40 Frequency Calibration
Chuck Carpenter
SR-40 Folks,
Tony mentioned this to me. Hadn't seen it mentioined here on the lists so I'm passing it along for Tony...[g] Use W1AW as a signal source. Note any difference in frequency when you zero beat the signal in the filter passband. Then go to the Setup Book, SR-40 tab and adjust the frequency there accordingly. Tony sez you can get really close this way -- W1AW frequency at 47.5 is pretty accurate. Chuck Carpenter, W5USJ, Point, TX -|- Rains Co. -|- EM22cv -|- 72 es 73 50 years -|- 19 - K2OFN and 31 - W5USJ -|- Most fun = QRP since 1984. www.w5usj.com hosted by Hamnutz.com -|- NeTxQRP www.netxqrp.com |
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Re: Success with SR-40
Richard Gagnon
Hi Tony
Thank you for the information as I have the Elecraft XG1 also. I still plan to have you build my receiver but the data will be good for comparison. A new model is also available. XG2 Three Band Receiver Test Oscillator / S-Meter Calibrator Cheers Richard Gagnon --- Tony Parks <raparks@...> wrote: Good Morning Leon, __________________________________ Yahoo! Mail - PC Magazine Editors' Choice 2005 |
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SR-40 Tuning and Other Good Info
Chuck Carpenter
SR-40 Folks,
Something I should have done first rather than stumble around and ask a lot of questions. There are two PDF files on the Flex Radio Systems download page. These are quick start and complete SDR-1000 operating manuals. Some folks most likely did this first and were most helpful. But it did make it easire to understand the manuals...[g] Chuck Carpenter, W5USJ, Point, TX -|- Rains Co. -|- EM22cv -|- 72 es 73 50 years -|- 19 - K2OFN and 31 - W5USJ -|- Most fun = QRP since 1984. www.w5usj.com hosted by Hamnutz.com -|- NeTxQRP www.netxqrp.com |
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Re: Success with SR-40
Tony Parks
Good Morning Leon,
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After building about 70 of the little receivers, this is what I typically see when level is calibrated with an Elecraft XG1: S9 calibrated at -73 dBm with the 50 uV RMS output of the XG1 and -107 dBm, the 1 uV RMS output of the XG1, is usually about 30 dB above the noise floor. Also reported is the 1 dB compression point at about -20 dBm. Happy to hear the kit has gone together well for you. 73, Tony KB9YIG ----- Original Message -----
From: "Leon Heller" <leon.heller@...> To: <qrp-l@...>; <softrock40@...> Sent: Monday, October 10, 2005 7:24 AM Subject: [softrock40] Success with SR-40 I completed my SoftRock-40 just before leaving for the GQRP mini-convention |
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Success with SR-40
Leon Heller
I completed my SoftRock-40 just before leaving for the GQRP mini-convention in Rotherham, and didn't have time to test it. I've just plugged it into my PC (running the SDRadio software) and connected it up to my trusty Marconi 2019A signal generator and it seems to be working OK - I can hear a -106 dBm signal at 7.040 MHz and can probably go lower. Has anyone else checked the sensitivity? I'll try it out with an antenna later.
I've promised George, G3RJV, a write-up for Sprat. I met someone at Rochdale who is building one, and someone else who wanted one but missed out. 73, Leon -- Leon Heller, G1HSM leon.heller@... --- [This E-mail has been scanned for viruses but it is your responsibility to maintain up to date anti virus software on the device that you are currently using to read this email. ] |
John H. Fisher
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