A few days ago, I observed two plumbers who were subcontracted to build and install some new hot water manifolds/valves for the heating system that serves our lab building. They were using some large
Well, it's not exactly just from the rig. I have a bulkhead plate mounted on the wall where all the feedlines & control lines enter and are connected thru protection devices (PolyPhaser). Some of the
I read with interest the transcript of the Dayton presentation by W6NL of his 2 element 40M MOXON type yagi. http://www.kkn.net/dayton2004/W6NL_40M_MOXON_YAGI.pdf I wondered if anyone has thought abo
Makes me wonder if anyone has removed the cap hats on the 40-2CD and slightly extended the element tips. I know that VE6WZ built some replacement high-Q loading coils for the 40-2CD but it's unclear
For a span of RG-213 like that, I would use some 1/8 inch steel cable as a "messenger cable" and attach the coax to it. The coax doesn't have the strength for that king of pulling forces. Imagine it
I guess the answer is to have the kind of room that K4JA has. His 80M 4-sqr is in the "80M field" and the 160 is in the "160M field". sigh... 73, Stew K3ND ___________________________________________
I have to go with Brad on this. I think is question was totally relevent. I had to Email Jay several times to get a question answered. I imagine that Jay is extremely busy so it's understandable. But
That is a good one. Actually, I would like to take a couple of the "executives" at the company I work for and hang them from a aluminum boom high in the air. 73, Stew K3ND http://lists.contesting.com
Can anyone give me the center-to-center distance between two legs of R25? I need to make something to mount on the tower face and can't find my Rohn catalog. I seem to remember 11.25 inches just want
I've had R25 installed at two different QTHs for something like 34 years. I usually do a twice a year inspection, top to bottom. I've never found a loose bolt in all those years. These are Rohn bolts
I've never seen a single one of these "spider balls" or "porcupines" installed here in SE PA. However, several years ago on a trip to Florida (driving), these things were everywhere in the Carolinas,
As I recall, there was a home made crankup design in QST (also in the 1960s) that used square steel tube. I think that the design described went up to 64 ft. I don't have my mags handy or I'd look it
Let's not tempt fate. If we get a copper owl and align it to true north, we have covered all bases! 73, Stew K3ND http://lists.contesting.com/mailman/listinfo/towertalk ______________________________
No, I never have. I've seen pictures of the ice storm damage to W3GM's antenna farm in the late 60's. The tallest towers were so loaded with ice that the extreme weight caused the tubing at the tower
I've seen tower legs inbedded in concrete rust thru also. I would use concrete AND a baseplate. You could fill the bottom couple of feet of the hole with gravel before you pour the concrete and still
Not very scientific, but chrome-moly is VERY TOUGH to drill! GL... Stew K3ND http://lists.contesting.com/mailman/listinfo/towertalk http://lists.contesting.com/mailman/listinfo/towertalk ____________
I agree! I bought some last year to replace one of the older runs up the tower. Really great cable. The next time I need to replace some coax, I intend to buy more Bury-Flex. 73, Stew K3ND http://lis
As a side note to sealing outdoor enclosures - Years ago one of the OTs mentioned that fact the he used moth balls to keep insects out of outdoor enclosures. I have a matching network for my 80/160 v
Well, I'm not so sure. If a bunch of wire antennas become heavily laden with ice (a situation many of our radio brothers and sister are dealing with right now) and wind comes up from the opposite sid
This is true. However, I've found it takes several years when they are inside a relatively airtight enclosure. I check them during normal equipoment maintance. 73, Stew K3ND http://lists.contesting.c