Mars cap frequencies

Mars cap frequencies DEFAULT

Mars Relay Radio System:

When at Mars, the Mars Relay aboard MGS receives Telemetry from balloons or landed Instrument packages (including cameras, atmospheric and meteorology instruments). Receive Frequency: 401.5275 MHz and 405.625 MHz. Transmit Frequency: 437.100 MHz. Polarization: RCP Transmitter Power: 1.3 Watts Beacon Modes: FM or CW Receive Data Rate: 8 to 128 kilobits per second Link Margin: See the Antenna Margin Table and the signal level chartDuring the Amateur Radio Experiment: The downlink frequency will be 437.100 MHz. This frequency will shift with respect to Doppler effects. The downlink from the Mars Global Surveyor Spacecraft will be transmitted from the Mars Relay's transmitter with a power of 1.3 Watts through an antenna with better than zero dBi of gain. The spacecraft will be rotating with the axis of rotation about 30 degrees off earth point. This means that the downlink signal will increase and decrease with respect to the period of rotation. The rotation period will be approximately 100 minutes. It is estimated that the Mars Relay antenna gain, as seen from the Earth, will be above 0 dBi in gain for at least 30 minutes out of every 100 minute rotation of the spacecraft.

What information would we like from the Amateur Radio Operators?

Provide the Latitude, Longitude, and Elevation of your antenna location. Provide a measurement of the signal relative to UTC. If possible give the reading relative to a standard reading. Any information about your antenna and receiver system would also be helpful. (For example, Gain, Noise Figure, Search Bandwidth, etc.)

How do I find out more information?

MGS WWW Page: See QST, January 1996 for an article on the Mars Relay flight test. E-Mail reflector, "MARS-NET" which will discuss current issues relating to MGS. Update notices will be sent through the e-mail reflector. To Subscribe: Send message to: [email protected] Message: Subscribe MARS-NET Your-Name Your-Call-sign For Example: Subscribe MARS-NET Robert R. Smith N6JKQ To submit messages to the MARS-NET reflector, address your e-mail message to: [email protected]
Return to Mars Relay Flight Test Home Page

I will second the response, as far as this community is concerned you are more likely to have feedback on the legal side of the fence then that on the pirate radio side. Even the folks that choose to open sail are not likely to admit or encourage it on an open platform which may be traced back to them, particularly since anyone can see your true name and address by looking up your callsign(s), and reporting folks to the FCC is a bit of a sport for some folks.

Additionally, those with valid reasons to have the modification likely have a valid situation to drive it. Best examples I have heard are folks that do storm chasing or volunteer first responders, since ideally they would have a reason to operate out of band to save lives. Folks aligned with some of the emergency radio groups (ARES) that have helped out with natural disasters or whatnot may also fall into that camp. Again, I would imagine that folks in these situations are well clear of the laws for legal operations.

Back to communities like this... I think part of the enjoyment of the hobby for many is designing their cockpits of radio and trail gear, as well as strapping all the lightning rods, I mean antennas, to their vehicles.

What I think a good practice looks like, is a mobile HAM station that can push 30-50w from your vehicle. This will have the reach and more likely listeners to help you get out of trouble. Supplement that with a halfway decent GMRS setup of handheld radios. They will likely have the reach for vehicle to vehicle ( when moving my family across the country our three vehicle caravan had no issues reaching a couple miles out without external antennas, and I can communicate to my wife when she goes into town from my little hill the house is on ~3 miles inside my home to inside the grocery store) in a convoy, are handy around the campsite, and your whole house is covered with the single license. If you do a little research, this setup is not expensive and works very well.

My few cents.


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Dan Myers posted the following new MARS VHF frequencies on the Milcom newsgroup. He obtained the list from Charles Hargrove's website at

New Military Affiliate Radio System (MARS) VHF assignments (courtesy of narrowbanding) (MHz):

138.9750 139.0500 139.6625 140.6250 141.1250 142.1500 142.2750 142.6625 143.3500 143.4000 143.4500 143.9500 143.9750 148.0250 148.0500 148.3500 148.3750 148.4000 148.6500 148.9500 148.9750 149.1875 150.1250 150.4000 150.6250

The complete realignment of the 138-144/148-150.8 MHz DoD LMR bands continues here in the states -New CAP/MARS frequencies. Even if you don't live near a military facility, you should be searching the frequency ranges above using 12.5 kHz spacing on a regular basis. You might be surprised what you will hear. Note: both AM and narrowband FM modes are used in this band. There are very interesting military aircraft comms in these bands.

As always, if you hear something drop me a line. I would like to post what you are hearing.

Oh. well, come on, and I am with you. They drank without clinking glasses, like a dead man. We sat, each thinking about his own. - Aunt Nagy.

Cap frequencies mars

Having heard a positive answer, Isabelle turned around and walked lightly towards her door. and I tried not to look at her swaying hips. After a couple of moments, I was already sitting in her room, and with a feeling of complete detachment I tried to make the computer work, cutting.

KW4QJ. What is Mars?

Did not help. With trembling hands, he put the mug on the table and headed for the door. - I'll go for a walk. I do not for a long time. If you can't wait for me, lie down.

Similar news:

))) I called a taxi and went to a rented apartment at the specified address. As I climbed to the third floor, I felt my crotch get wet with every step up. But it really started flowing when I entered the apartment and saw the chair. The present.

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