Balloon Group Minutes 07/18/95


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EOSS balloon net - 18 July 1995 - 147.225 repeater

Net called by Larry Cerney N0STZ

Person passing traffic is listed first, then the traffic. 

N0SIS (Andy Kellett) - Will N0RQV (Ted Cline) be able to bring his TV and VCR to the upcoming launch? Who can set up and run the 70 cm station at the ground station? 

N0RQV - Ted says he will bring his TV and VCR.

WA9WWS (Don) - Don will run a 70 cm station. 

N0RQV - Ted says he will run the net on the crossband repeater if Don can't. 

W5VSI (Mike Manes) - Mike has attached the triply-folded dipole antenna made by George Riedmuller to the wireless cutdown mechanism. The antenna weighs only 0.25 oz. Preston Prunty says he's sorry he couldn't make it to the last meeting. He will be performing a test lauch of his sequentially fired rocket on Saturday, July 22 at 5:15 am MDT. He is looking for input and will answer any questions anyone has. Mike says Preston is planning on launching the rocket from a rail supported 10 ft away from the balloon's center line. The rocket will travel on a 10 degree cone around the balloon's center line. If launched 62 feet below the balloon the rocket will barely miss the balloon, so 100 feet down the string would be better. 

AA0P (Jack Crabtree) - The upcoming balloon launch will be on Sunday, July 31 at 9 am at the Navsys facility. The launch is being done for the Central States VHF Society conference; everyone is welcome to come to the launch site and see the launch. There will be a directed net on the crossband repeater, but the use of the repeater will go to the tracking and recovery team if they need it. The input of the repeater is on 446.0 MHz and the output is on 147.555 MHz. The 147.555 output of the crossband repeater will also act as the beacon for the flight. Jack asks if anyone with a good HF station can run a net on 40 meters [no reply]. The command/telemetry transceiver in Shuttle II will be on 144.34 MHz. Software changes have been made to the GPS receiver to make the receiver lockk up more quickly and to make sure it stays locked. There are also plans to increase the distance between the crossband repeater and the Shuttle to reduce desense of the crossband repeater. Setup will begin about 2 hrs before launch (7 am). The new wireless cutdown mechanism will be tested on this flight. It can be operated in both immediate cutdown mode and with a load switch which will cut the balloon free after the balloon pops. To get to the launch site, take the Baptist Rd. exit from I-25, head west on until you hit Old Denver Highway, head south until you hit Woodcarver Rd. The launch site coordination will be 146.55 MHz simplex.

W5VSI - The cutdown mechanism has three commands, arm, disarm and cutdown. The arm and disarm commands are used with the load switch. 

KB0MMV (Chris from Black Forrest) - Will the Web page be updated with flight information?

N0KKZ (Rick Von Glahn) - Rick is editing the flight announcement and will put it up after the net. The data from the flight will be added to the page immediately after the flight. 

AA0P - Jack says he will present a paper at the Central States VHF Society conference from 11 am to noon on Friday the 28th. It will be a description of the development of Shuttle II. 

K0YUK (Merle McCaslin) - Merle accompanied George and Marty to their tracking and recovery presentation for the Pikes Peak VHF Society. There were about 80 people there and a few people showed interest in doing tracking and recovery for the next flight. Merle reminds everyone that we still need articles for the Stratosphere. 

KB0BMU (Chip Bisbee) - Can we run a 40 m net from the lauch site?

N0STZ - Yes, but you would have to use a mobile vertical antenna, and the signal would not be very strong. 

AA0P - Also RFI is pretty bad when you operate an HF station at the ground station. 

Net closed

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last edit 02 March, 2012
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