AMSAT-NA meddelar att de har en ny pre-amp i sitt sortiment. Den är för VHF/UHF banden och byggd runt en MAR 7-krets. Överskotten går till AMSAT Fox-satelliterna och den kostar ca. 50 US$.
AMSAT-NA is pleased to announce an inexpensive, broadband VHF/UHF/WX
satellite receive-only preamplifier.
Key features:
Ready to operate–not a kit! Fully assembled, tested, and installed
in a metal enclosure with female BNC connectors on input and output.
It is based on the MAR 7 device, and covers 100 MHz to 500 MHz.
This includes the137 MHz WX, 2M, and 70cm satellite bands.
Operates from +9-15V DC (a fresh 9V battery works great!). Perfect
for portable operations using dual band hand-held Yagis like the
ARROW, Cheap Yagi, etc. Just put it inline on the correct receive
band for operations in either mode U/V or V/U. You won’t believe what
you’ve been missing!
Includes low power (about 5W) protection diode on the input for
accidental transmissions into the input. (This preamp is not RF
switched. It must be protected from inadvertent repeated or high
power transmission RF using a relay or diplexer.)
Full details and schematic can be found in the November/December
2012 AMSAT Journal article by Mark Spencer, WA8SME, or downloaded
from the item in the Hardware section of the AMSAT Store:
http://store.amsat.org/catalog/
The assembled and tested kit is priced at $50 USD plus shipping.
Proceeds from the sale of this item will help fund the AMSAT Fox
Family of satellites! This equipment was developed as part of the ARRL Education and
Technology Program.
[ANS thanks Mark Hammond, N8MH for the above information]