Magic valley Astronomical Society Near Space
Balloon Program


Equipment
   Kimberly IGATE
   KD7VKZ Tilt/Pan
   K6ZVA Trailer
   K6ZVA Flight-Tracker
   K6ZVA ATV Transmitter
   K6ZVA Cut-Down
   KD7VKZ Tracker
   Alt/Az -> HA/Dec
   Kenwood TH-D7
Missions

Global Links
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Magic Valley Hams
It was great fun, but there has been no new balloon activity since 2006, and I don't expect anything new.

K6ZVA ATV Transmitter Package

This unit will transmit live video from three sequenced cameras.

The1 watt pep 70 CM transmitter is a PC Electronics TXA5-RC .
A CCD hi res camera is pointed downward and is the first in the sequence.
Two Cmos cameras are used in the next two 40 sec.views.
8 AA Lithium battery pack provides at least 6hrs of normal operation.
2 D size Lithium batteries provide power for a 10k rpm motor driving a weighted wheel
for improved gyro stabilazition.
A zero drag thrust bearing upper support also improves stability.
Foam insulated for low temp. operation.
A 1/4 wave antenna is mounted downward on a foil ground plane.
CMOS switching of three reed relays provides camera steering.
   

Top View

Top View

The black box on the top is the gyro cover. The black box on the left side of the picture is the side looking camera. The black box on the right side of the picture is the down looking camera. The bananna jacks allow you to check the transmitter battery voltage without opening the case.
   

Bottom View

Bottom View

You can just see the top looking camera at the back of the package. Note the metal foil ground plane on the bottom of the box, and the 1/4 wave 70cm antenna in the center, and four stand off legs that will hopefully protect the antenna and possibly allow the video signal to get out after landing.
   

Inside View

Inside View

The up looking camera is on the left. The down looking camera is on the right. the side looking camera is on the bottom. The PC Electronics transmitter is on the left. The D cells that power the gyro are the big black object at the top. The video battery pack is wrapped in white foam, and is located on the right side. The circuit board at the bottom is a custom designed timer system to sequence the cameras. The red and silver wheel is the gyro wheel. The hook that is sitting on the gyro motor is used to suspend the camera package from the rest of the stack.

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