use this Antenas - Helix - Javascript on-line calculator for the specs. change the center freq to 1550mhz.
2 3/4" slinky cut off 26 1/2 turns
use 1" or 1 1/4 " pvc pipe for boom to hold slinky
I used 3/4" pieces of foam window tape to help hold slinky to boom as well as zip ties(look at pics)
14" pizza pan for dish and some scrap 2x4 and plywood for boom and mount support.
for the bulkhead connector i used this.
SMA female jack chassis panel mount 4 hole solder connector; US stock; fast ship | eBay
you will need to cut a 1/4 turn match piece to solder to the end of the slinky i made mine around 3/8th wide (see pics)
the spacing will be 1 3/4" between the coils on slinky.. this is close to the recommended 44.5mm
I'm using sdrconsole V3 for main program with use of virtual audio cable feeding it to jaero software to decode data..
2 3/4" slinky cut off 26 1/2 turns
use 1" or 1 1/4 " pvc pipe for boom to hold slinky
I used 3/4" pieces of foam window tape to help hold slinky to boom as well as zip ties(look at pics)
14" pizza pan for dish and some scrap 2x4 and plywood for boom and mount support.
for the bulkhead connector i used this.
SMA female jack chassis panel mount 4 hole solder connector; US stock; fast ship | eBay
you will need to cut a 1/4 turn match piece to solder to the end of the slinky i made mine around 3/8th wide (see pics)
the spacing will be 1 3/4" between the coils on slinky.. this is close to the recommended 44.5mm
I'm using sdrconsole V3 for main program with use of virtual audio cable feeding it to jaero software to decode data..
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