Hi Folks. Ran into issues trying to install an new A4S with 40M extension for
a client last week.
Unfortunately the Cushcraft manual does not supply a set of SWR curves but
their spec sheet claims >500 khz bandwidth within 2:1 swr points on 20/15/10.
I never saw this amount of bandwidth on 20 or 15 when following the supplied
dimensions and I could not for the life of me adjust the antenna to put the
center points where I wanted them (e.g. 14200, 21.200, 28.250)
Also noted the traps supplied with this new antenna DID NOT have drain holes
and one of them developed an intermittent internal connection when installed
(substituted an old trap and this condition went away).
So if anyone has SWR curves they can share with me, and other tuning info,
please send them along to me off list at email@example.com.
John Crovelli W2GD/P40W
TowerTalk mailing list