I use a BOSCH laser tape obtained from the local hardware supply store.
It measures to 250 ft, +/- 1/16". The only challenge is to estimate
the wire sag in measuring a long length of wire. The laser is always
measuring straight line. For shorter lengths, I stretch the wire tight
on the floor of the shop or laying over reasonably level ground and
shoot the laser along side.
In general hams will construct the antenna and then trim the length {add
or subtract length} to get the SWR value to 1:1 or such.
73
Bob, K4TAX
On 2/9/2016 1:38 PM, Lynn W. Taylor, WB6UUT wrote:
Short of buying a 100 foot tape (or a longer one), what methods do
people use to reasonably accurately measure 53 feet (or 72 feet, or
136 feet)?
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