Wrong... Google UFER ground or "concrete encased grounding electrodes". 73 de Perry - K4PWO I am not sure, but I think if you look at the Hand Book It will state that you do not want the tower or any
Is your time worth anything? You'll be plenty busy with a ready mix truck! Having to mix 2.5 yards of concrete on top of the time to settle and finish the concrete will make a very long and tiring da
There's under water and under salt water... in his case (Chincoteague Island) he's dealing with salt water. I recall that you need a special mix for that situation. http://www.epcserver.com/Structura
I see two large cranes in the future... One to handle a "man basket" and the other to lift the tower. Use the basket to attach the lift crane to the top, drop the basket to the half way point and spl
Rope over the ridge is a good way to damage your roof material. Use a doubled "tarp" (or other material) as a rope "shield" and pull slowly! 73 de Perry - K4PWO Grant, Rope over the house ridge tied
The answer is, it depends... Some DB/E-9 female to female cables are "NULL" modem cables that have end to end crossed pins. Some are not NULL modem cables... The only way to know is to check to see i
And a "new" theory says that Gamma ray bursts may be responsible for the "super" bolts. The idea is the ionizing radiation aids in a cascade of charged particles creating discharges well beyond that
Here's the one I use... http://www.grainger.com/Grainger/ARLINGTON-Strain-Relief-Cord-Connector-4JWN 4?Pid=search You can get three of these for the price of one of the Hubble brand. I've had good re
For fiberglass tubing and rod, see... http://www.mgs4u.com/index.html Hopefully they can ship to Charly. 73 de Perry - K4PWO --Original Message-- From: towertalk-bounces@contesting.com [mailto:towert
Your link is bad... here is the correct one (note the "inc" before the ".com"). http://www.synthetictextilesinc.com/supportham.html 73 de Perry - K4PWO Sri ... Try agn .........Bill / w2ay http://www
A hypothesis is a "concept" that becomes theory with valid data. That means theory has the weight of scientific research behind it. I can form the hypothesis that the sky is blue from a giant grating
$17.99 each from... http://www.l-com.com/item.aspx?id=20935 73 de Perry - K4PWO Hutton: http://www.hol4g.com/ac/shop.aspx Tessco: http://www.tessco.com/ Hope that helps, marlon -- Original Message --
<SNIP> "I think this all reminds me of the bumblebee axiom quoted here (or on Cq-contest, can't remember), which said that -- and it is fact -- aerodynamic experts, calculating mass and wing surface
Even though not "specified", you can add vertical rebar to form a true "cage". Then you just support the rebar off the bottom of the hole. You would probably want at least one diagonal on each side t
Your way would work also. In fact, the top "mat" could be worked in after to pour or at a pause in the pour. That way, you have no obstructions in the way to work the concrete into corners, etc. 73 d
If you look at the trip curves, a 600 volt @ 60 amp event takes about 5 ms. to trip the device. I think that transient devices with a standard low current fuse would work better. See http://hr-micro.
http://www.l-com.com/item.aspx?id=21069 RG-8/LMR400 size $2.99 each http://www.l-com.com/item.aspx?id=21070 RG-58 size $2.99 each I believe they have a quantity 10 limit but it's been awhile since I
Forgot to send to the group! Sent on the Sprint® Now Network from my BlackBerry® This statement tells me it was never in service... "It has been sitting horizontal since it was delivered from US Towe
Well stated... I have and use a "custom" extended BWD-90 (now at 200') for Ham/MARS. The BWD-90 falls off fast below 4 MHz. and becomes more and more a true dummy load. The BWD-180 is good to 2 MHz.
The falling pieces are your reminder! HI! 73 de Perry - K4PWO This might be a silly question, because I'm not familiar with the Ham IV - but how do you avoid having a senior moment and trying to rota