[amsat-bb] Re: receiving 5.8 GHz
Hi all! It sounds like two different schools of thought are at work here. One is build it. Definitely cheep. Recreating a microwave receiver with a final if that the Dongle can use shouldn't be a problem. We need: An antenna Preamp/filter Mixer LO generator Filter on the output of the mixer to the radio. Cant' forget a signal source to test this stuff. Most of this can be had on epay. Some like the horn antenna can be made for practically nothing. Please offer comment here!! Found lots of good info and some software at w1ghz On the high end, this includes the block down converter option. Looking around, it's a crap shoot on this part. Other is buy. Not so cheep. The same approach I want to use can be applied to any other of these sats that work at microwave. Lets keep kicking the can down the road. Norm n3ykf BTW: I do have a 141t with the 8555a plugin conx unknown over 1gHz ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] MAREA a School Activity You Can Do
Dinner conversation the other evening. Dad: Suzie, what did you do in school today? Science class was pretty cool today. We have been teaching our robot, Robbie, to move through a maze.last week my group was the first to make it through the maze without hitting the sides. So today, Ms. Smith allowed us to send the commands we made up to move Robbie through the maze up to the International Space Station and back down to Robbie. We used ham radio to do it. I got to push the computer key that actually send the commands! There was some raspy sounds from the radio speaker, a delay, like a hundred hours.well it seemed like a long time. and then Robbie started to go through the maze! Wow, that's pretty amazing. Yes it is. We listen for radio signals from the ISS all the time, but this is the first time that we ever sent our own radio signal to the ISS from the radio in our classroom. And I know that our radio waves were heard in space because the signals came right back down to Robbie and we watched him move through the maze.just like Mission Control does to make Curiosity move on Mars. Dad: Well I didn't know you were an astronaut. Ah Dad, not yet, but I will be some day. .I'm sure you will Suzie. Interested how you can help your school do this? Ask me, mspen...@arrl.org. Mark Spencer, WA8SME Education and Technology Program Director ARRL, the national association for Amateur RadioTM 43 Pinelock Dr. Gales Ferry, CT 06335 860-381-5335 860-460-1139 (cell) mspen...@arrl.org ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: filter
Here is another mode j option: http://www.dk3wn.info/j-filter.shtml 73 Jan PE0SAT On 11-11-2012 09:49, Nick Pugh wrote: Hi All A few weeks back there was a note on a mode j filter made from square tube can someone on the list point me to the article -- With regards PE0SAT Internet web-page http://www.pe0sat.vgnet.nl/ ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] Re: receiving 5.8 GHz
Norm, The LNB units are used on the C Band Satellite TV Receiving Dishes ( the ones that are 8 to 15 ' in diameter). The DRO is a ceramic piece glued to the PCB with a metal case around it and a adjustment screw. Some are fixed in a metal can. The Mixer is used for 3.7 to 4.2 GHz Y may be able move it up to 5.8 GHz. The LNA may be able to go there as well. The ARRL and THE RSGB have several books on making things in this band. A lot of surplus equipment at sites is being changed out for new, and you might find something that can be tuned down in frequency from the 6 GHz band. Mini-circuits has several Low Noise amplifiers and mixers that can be used. Suggest you check out their web site. Try to fine some Amateur Radio Microwave Activity in your area. Most of us will spend time helping others to get on the air Good Luck, Art, KC6UQH http://www.minicircuits.com/homepage/homepage.html Good luck with the project -Original Message- From: Lizeth Norman [mailto:normanliz...@gmail.com] Sent: Sunday, November 11, 2012 10:04 PM To: kc6...@cox.net Cc: amsat-bb@amsat.org Subject: Re: [amsat-bb] receiving 5.8 GHz Art, How do I recognize the Dielectric Resonance Oscillator? Where might I get one of these units? Where, how and with what do I plumb the rf with? Suggestion on parts re the lna ic and I assume a mixer ic? Wonder about the limit of dead bug construction at GHz? What methods might one use? I assume microstripline transmission lines.. No trips to AES, HRO or Skycraft here.. 73 de Norm n3ykf On Mon, Nov 12, 2012 at 12:46 AM, Art McBride kc6...@cox.net wrote: Norm, You could start with the 5.1 GHz DRO in an old C Band LNB for the LO. Add an LNA IC, and Mixer. Use the IF section in the C Band LNB to cover cable loss. Art, KC6UQH -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Lizeth Norman Sent: Sunday, November 11, 2012 11:11 AM To: lt,amsat-bb@amsat.orggt, Subject: [amsat-bb] receiving 5.8 GHz Hi all! What schemes are available for someone who only has a funcube dongle? It tops out at 1700 MHz. I am thinking hetrodyining using a brick and a double balanced mixer. Block down converter is another option. Any other options on the cheep side? Norm n3ykf ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
