Texas High Altitude Balloon Flight, Cross-band Repeater contacts, 2011-09-17

North Texas Balloon Project presents: Texas high altitude balloon flight - This video is a demonstration cross-band repeater downlink on 147.560 MHz.

Details on the cross band repeater:

Payload: Cross-band Repeater Package

Purpose: Short & long-distance amateur-to-amateur radio contacts

Summary: Utilize a pair of radios coupled to a miniature repeater controller to allow Amateur Radio licensed operators separated by either short distances (LT 50 miles) or long distances (50-250 miles) to make radio contact through the balloon package

Technical Equipment Details:

o A pair of Yaesu VX-2R dual-band amateur transceiver

- Act together, one as receiver and one as transmitter

- Radio power supplied by internal NiMH battery pack

- Uplink radio receives on 445.800MHz

- Uplink radio modified to provide external Carrier-operated squelch (COS)

- Downlink radio transmits on 147.560MHz at ½ watt of output power

o A pair of Diamond RH77CA dual-band antennas, one per transceiver

o NRHC-micro repeater controller

- Provides periodic identification

- Controller power supplied by 9VDC alkaline battery


More info:

http://www.ntexbp.org

http://www.edtexas.com/balloon
http://www.edtexas.com/balloon/flight%2019.htm

(3551, 3552)
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Category:

Science & Technology

Tags:

• high
• altitude
• balloon
• flight
• Texas
• ntexbp.org
• cross band
• repeater
• Yaesu FT-727R
• North
• Texas Balloon Project
• N5XED
• N5WLZ
• KB4JIK
• KD5RET
• W5ROX
• W5AC
• W5SJZ

[goldenageism]

does anyone know how much high altutude scientific ballons are?

[718brooks]

i found one of theses radios in an estate sale 727r in really good condition what are they worth ty