I don't doubt the AMP connector is great but doubt this issue is due to
a connector.
One thing I can say from personal experience is that if you have a tall
or long antenna, you definitely need a static bleed on that bad boy.
Never really gave those stories much credence but a number of years back
I was doing some work on an 80m full size vert one summer. Managed at
one point to to reach up and touch a wire that was hanging off the
vertical - and landed up on my butt from the jolt. So that static build
up thing is real. Been using high value high power wire wound resistors
for bleeding since. And a polyphaser to provide the discharge path in
the event the voltage builds up too high from a nearby strike or whatever.
The 1500 has PIN diodes for switching. Generically speaking running a
PIN diode switched amp without a spark gap on the coax to clamp spikes
from whatever cause seems like tempting fate one step too close. Maybe
the 1500 has some internal protection - don't hear much about a lot of
switching failure on the amp. But a GDT pass through like a polyphaser
is cheap insurance.
PS: CQ WW RTTY starts tonight!!!!!!!!!!!!!!!
73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com
On 9/27/19 1:48 PM, Jim Brown wrote:
On 9/27/2019 11:01 AM, j...@kk9a.com wrote:
If PL-259s are failing they are either poor quality connectors or
there are serious antenna issues causing excessive voltage.
YES! Only first quality connectors and adapters should be used.
I run legal limit to resonant antennas fed with 50 ohm and 75 ohm coax
and hard line. Amphenol 83-1SP connectors are the standard throughout
my station. I use type N only on hard line for which UHF connectors
are not available. I've NEVER experienced any symptoms of arcing in
connectors.
I HAVE seen lots problems caused by poor quality connectors and
adapters, and by poorly soldered coax connectors when putting stations
together for Field Day and similar operations.
My rule: In North America, if the connector doesn't say Amphenol
83-1SP or have a MIL spec number stamped on it, it is JUNK. The same
holds true for adapters.
73, Jim K9YC
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