ARRL East Bay Section

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PARACHUTE MOBILE HAM RADIO

Posted by af6aq on 8th June 2010

PARACHUTE MOBILE & ARRL VHF QSO PARTY

JUNE 12 2010

SPECIAL EVENT CALL SIGN

K6J

The Parachute Mobile Project (www.parachutemobile .org (http://www NULL.parachutemobile NULL.org/)) will be participating in the ARRL June VHF QSO party by conducting ham radio jumps on Saturday June 12, 2010 starting at approximately 1:30 PM at the Bay Area Skydiving DZ at the Byron CA airport.

Mark Meltzer AF6IM will be jumping solo from 14,000 feet and operating 2 meter SSB on 144.200 MHz USB. Mark will QSY up as QRM, QRN and other conditions may require. 146.460 MHz FM simplex will be used for mission tactical operations comms. Jump times will vary depending on winds and aircraft loads. Tandem jumpers get boarding priority as they fund the DZ operations, so please be patient. We hope to make at least two jumps during the afternoon and possibly three. Mark will be using the special event call sign K6J during his descents. The jumps will be HAHO (high altitude high opening) to give maximum hang time for QSOs.

Special event QSL cards will be issued to listeners who provide verifiable reception details and to ham contacts who QSL and send a SASE to AF6IM at his qrz.com (http://qrz NULL.com/)mailing address. Mark will carry an APRS telemetry beacon built by Mike Pechner NE6RD and Scott Miller N1VG which will transmit his call sign (AF6IM), GPS data and heart rate and blood oxygen levels. APRS data can be viewed at http://aprs. fi/ (http://aprs NULL.fi/) using AF6IM as the search term. Updated jump schedule info will be posted on Twitter. Twitter ID is parachutemobile.

Jon Gaefell, K6OJ, will be operating Mission Control assisted by Robert Coppock, KF0G from a mountain peak at or near Mt. Diablo. Mission Control will be operating/listening on 144.200 MHz USB and 146.460 Mhz FM simplex. Ray Rogoway W6RAR will be conducting drop zone relay comms. Rob Fenn KC6TYD will perform pre-flight safety checks including jumper medical condition, and will confirm that the jumper’s radio gear will not impede operation of his main or emergency parachute systems.

Please join us for a unique parachute mobile QSO. We won’t be able to give you a lot of contest points or multipliers but you will have the fun of working a ham parachutist in flight. We expect a contact horizon of at least 100 miles during the higher altitude portions of the jump and perhaps much further if conditions are favorable. The theoretical radio horizon calculated at 14,000 ft is 118 miles.

The drop zone at Byronhttp://www.bayareas kydiving. com (http://www NULL.bayareaskydiving NULL.com/) welcomes spectators, but pets must remain in vehicles. There is no admission charge and plenty of free parking. Spectators must stay away from parachutes being packed and remain outside of jumper landing areas.

Feel free to re-post this in any ham radio venue where it may be of interest. Please pass the word and join the fun.

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T-HUNTS Sponsored by LARK-SBARA

Posted by af6aq on 16th March 2010

Pleasanton Hunt 6:00 pm March 20th Talk-in 147.12 + PL 100
Tony AB6BR will be the fox.

Fremont Hunt 6:00 pm April 3rd Talk-in WA6PWW 147.015+ PL 103.5
Bernhard AE6YN will be the fox.

For directions or more info please call Rich KN6FW at 925-462-1467
73 KN6FW

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T-HUNTS Sponsored by LARK-SBARA

Posted by af6aq on 25th January 2010

Pack-a-lunch Hunt 10:00 am 5th Saturday hunt Jan 30th Talk-in 145.35- PL 100 Paul K6FRC will be the fox.  This will be an EASY hunt! (Note: since it uses the 145.35 repeater, the start point is probably at Altamont Pass. Don KC6IPO)

Fremont Hunt 5:00 pm Saturday Feb 6th. Talk-in WA6PWW 147.015+ PL 103.5
Rita KI6SSQ will be the fox.  This will be an EASY hunt!

Pleasanton Hunt  5:00 pm Saturday Feb 20th. Talk-in 147.12 + PL 100
Rich KN6FW will be the fox.

I will be teaching a Tech license class 4th Sat of March.
If you know anyone who wants to get a license have them contact Me.
Rich KN6FW 925-462-1467 For directions or more info please call Rich KN6FW at 925-462-1467

73 KN6FW

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Nov. 7 Fremont Transmitter Hunt

Posted by af6aq on 14th November 2009

I was pleasantly surprised at the turnout for this hunt–seven teams. The transmitter was turned on at 4:50 PM.

Don KD6IRE found the T first and with the best mileage at 10.9 miles. That’s almost a straight line to the T.  Well done!

10.9 miles, KD6IRE, (Don) arrived 5:55 PM
11.1 miles, AB6BR, (Tony) arrived 5:56, tied for first (10% rule)
11.6 miles, KJ6AMG, (Gary) arrived 6:37, tied for first (10% rule)
14.2 miles, N6YIF, (Pete) arrived 6:25
16.2 miles, KN6FW, (Rich) arrived 6:00

Two teams didn’t finish the hunt:
W6EI & KJ6CPX
KI6YTA

The transmitter was located in North Fremont at the Quarry Lakes Park on the trailhead at the south end of the parking lot near Paseo Padre PKWY and Isherwood Way.  The transmitter was putting out 8.5 watts into a 5/8 wave mag mount (on a piece of sheet metal) at ground level along the east side of a north-south running chain link fence.

73, Gary WB6YRU (The fox)

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October Fremont T-hunt

Posted by af6aq on 12th October 2009

Hi all,

Steve turned on the fox at 6pm, right on schedule although it was hard to tell at the start point. I stayed with Gary AJ6AMG at street level while everyone else went up the hill to try to hear it.

Steve was modulating a very weak signal with white noise so it was hard to recognize it from the usual noise level but I detected a slight increase in noise at the 146.565MHz fox frequency with my HT. Forehead fade seemed to indicate more or less 280 degrees, towards the south end of Coyote Hills.

Gary hooked up his newly built home made 4 element cubical quad beam to his hand held scanner and discovered why a scanner may not be the best choice for such work. Having a very wide front end it was being overloaded by out of band signals so he could not detect the fox. We then tried my HT (Alinco DJ596) and we had maybe an S4 signal from the direction of the Dumbarton bridge toll plaza. He also has a DJ596 he could have used but better still would have been his Radio Shack HTX202. I know because I also have one. The front end is very tight, 2m only, and has great sensitivity. If you can get one of these long out of production HTs, preferably with the AA battery pack, do so. Even if the TX is dead they are excellent for 2m transmitter hunting.

Eventually the rest came down from the mount including my partner Pete N6YIF and off we went.

Pete had the same bearing (280 degrees) as Gary so we set coarse for the toll plaza by the shortest route. We had no signal in the car, not on the doppler or the mag mount. As I recall we had no signal on the mag mount until we were north bound on Cherry crossing Stevenson. There was not enough signal for the doppler until after Mowry. We made a left turn on Central and seemed to get a false doppler bearing to the right as we crossed the tracks but we stayed on coarse towards the toll plaza.

The signal then went dead so we stopped at Willow and Enterprise (in Newark) to wait for the signal’s return. Pete got out his home made yagi to see if he could receive the signal. I was going to bring a camera. I sure do wish I had. He made the yagi with metal tape measure “tape” for the elements. An excellent Idea since it allows it to be folded for storage. There is one major problem with the design though. In high winds it folds up on it’s own. The wind was gusting over 40mph ;>. What a great picture that would have made.

After maybe 20 minutes Steve got the fox back on the air and the hunt resumed.

There is a problem with getting a weak start point bearing towards Coyote Hills. It is usually a reflection from a fox in north Fremont or Union City near the hills. Not last night though. It was in a parking lot at the west end of Thornton right where it turns north.

Pete and I were the first to arrive but more importantly, with the lowest mileage so we won, again. We spent most of the time waiting for the others in our cars because of the nasty chill factor.

Two hunters gave up. Gary (KJ6AMG) headed for home because he felt he was getting a re-lapse from a cold he hoped he was over, and Bernard who joined us for pizza at the Round Table in Centerville where we had the usual excellent pizza and conversation.

Don Safer  KC6IPO

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