Two versions were designed: -
(a) The "JR1" High performance version, helically wound on 20mm light weight hollow fibreglass radome with 2mm solid copper wire giving this antenna the low resistance required for high performance reception and transmission.
(b) The "JR2" Economy version again helically wound with only 1mm PVC insulated copper wire.This antenna still maintains excellent performance.
Both versions are terminated to a heavy nickel-plated brass ferrule.Then antenna is produced using hollow fibreglass tube for greater flexibility and importantly light wight characteristics allowing for easy vehicle mounting.
MODEL TYPE DESCRIPTION
A - 150 JR JR1 4Ft version clear heatshring exposing coil.
A - 151 JR JR2 4Ft version all black