[TowerTalk] Loos PT-3 Corrections for EHS Cables

john at kk9a.com john at kk9a.com
Thu Apr 25 17:31:06 EDT 2019


Your text format is difficult to read.

If I recall there is a chart with the gauge. The Loos PT-3 is not  
designed for EHS but it is definitely better than just going by eye,  
which is what I did previously and in my opinion it is close enough.  
It will never be accurate, there are much better devices but they cost  
thousands of dollars.

John KK9A


Byron Tatum wrote:


Hello-     I have spent some time searching but could not find the  
information I recalled seeing, previously I believe on this site,  
regarding the correction factor for the Loos tension guage when used  
on the stiffer 1x7 EHS guy lines.     Particularly I am looking for  
corrections in using the Loos PT-3 with 1/4" and 5/16" EHS guy  
cables.I did find one Ham's comments on his website about applying a  
10% correction (I believe adding 10% to the converted pounds reading  
taken from Loos guage) for the 5/16" EHS cable.    I read his comments  
about a procedure:       1. Positioning the Loos guage in several  
different places on guy cable, just slightly removed from each other,  
due to the effects of strand lay on the nylon pulleys.        2. Next  
he averaged the raw scale readings then converting this averaged  
reading to pounds on Loos chart.       3. This pounds reading was  
increased by 10% (correction for 5/16" EHS).Any comments appreciated.  
I am doing some fine tuning on guy tensioning on newly erected 130'  
Rohn 45G tower, put up according to Rohn 130 MPH dimensions and  
specifications.Thanks, Byron W5FH



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