[amsat-bb] Advice for a portable ground station
PE0SAT | Amateur Radio
pe0sat at vgnet.nl
Fri Jan 16 14:08:42 UTC 2015
Hi Tom and others,
Maybe this link will answer your question.
73 Jan PE0SAT
>> The lack of a fully searchable archive for this list has made this
>> necessary, my apologies for a noob-style query.
>> I’m gradually assembling a portable ground station for the FM
>> primarily using John Heath’s (G7HIA) article “Down-to-Earth Satellite
>> Communications” (PDF), focusing on his “Awesome” configuration:
>> Dual-band HT
>> 2m amplifier
>> 70cm preamplifier
>> Arrow II antenna
>> In that article he uses RG58 coax, perhaps 15-20 feet max. Is there
>> better choice that also works in that application? Considering the
>> involved, price per foot is not really an issue.
>> He also calls out an RF choke at the feed point of the 70cm antenna,
>> gives no detail about its material or construction. It looks to me
>> like a
>> few turns of RG58 on some type of ferrite core. I’ve spent hours
>> for information (commercial or DIY) and have come up mostly
>> All the “meaty” stuff is for HF only.
>> A final question concerns the various connectors involved. The
>> illustrations in that article aren’t the best, but it seems that he’s
>> BNC terminators on all the cables, and BNC-to-UHF adapters where
>> I’m concerned (perhaps too much) about cumulative losses, both from
>> the coax
>> and all those adapters.
>> My goal is a tripod-mounted antenna, operating on battery power from
>> parks and forest preserves nearby.
With regards PE0SAT
Internet web-page http://www.pe0sat.vgnet.nl/
DK3WN SatBlog http://www.dk3wn.info/p/
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