Buy it from whoever has the contract to run hardline in your area. They get it at a big discount over single reel prices. You would be surprised how far a case of beer goes with the guys on the truck
Unless someone has access to NEC-4 or some even more restricted military software the best you can do is guess when over anything but perfect ground. Here is where actual work in the great outdoors h
Ive zapped ComScope quad shield on 75/80M with 1500W by trying to run a sloper on both ends of the band. Changed it to a 2 wire version cut for 2 frequencies and it works fine. The light weight compa
Didnt do an autopsy, I could see the zap in the dark. Insulation broke down with the VSWR developed voltage. It was around 4:1 at 3.8 MHz. Luckily it was only 2' away from the connector so I just cut
Back before computers told us that everything we did was wrong I put up a Vee that was 2 1/2 wave per leg on 80M and 5 on 40. Height was only 60' which was all I could do with 8 scrap telephone poles
He is not talking about gaps. The water used to form concrete is absorbed by the cement and turns into a crystaline structure. It is that structure that is conductive to some degree that is affected
What are you using for test equipment? If I remember correctly W8JI has stated that the MFJ 269B is innacurate on 160; check his web page just in case. If you have an accurate GDO available couple it
When using the GDO run 1 or 2 elevated radials to complete the 1/2 wave circuit. Attach them to the vertical with 1-2 loops around the GDO coil. Guys insulated at or close to the tower will have litt
Strange indeed. For several years I used a T2X to turn a 10 15 20 stack of 4 el, the 20M being on a 40' boom. The T2X was down about 7' with a TB3 on the flat top and a home brew version made from a
Davis RF can supply #16 black PE jacketed real Copperweld at .07/ft in a 5000' reel; good stuff for 160M phased Beverages for several directions. They also have #13 19 strand black PE jacketed Copper
With the rapid decline of the commercial 2 way radio business 7/8" cable is becoming worth scrap prices only around here. Im given 100-200' lengths complete with connectors by several 2 way shops sim
It appears that you need a higher feed impedence in order to improve the bandwidth a bit. Try dropping a wire from the top and 2-3' away. Ground the base of the tower to the radials and feed the wire
He has already got a match so thats not the issue. The bandwidth appears to be poor with the L network he is now using. Variable capacitors are high Q and will narrow the BW. Since the tower is elect
He hasnt determined any reasonance yet, just some readings that are easy to misinterpet by those not well versed in that area. And as already mentioned, you do not measure an antennas characteristics
Great stuff; I use it regularly for getting traction on boatanchor dial cords and also when Im doing an old fashion lacing job on a wiring harness. Also melted a bit with a soldering iron and stuck a
I didnt even know that CQ was still in existence! How about a synopsis of the article? Carl KM1H _______________________________________________ _______________________________________________ TowerT
A friend in the next town had a 120' Douglas fir shipped by rail from Washington to NH. It became the ridge pole for his "log cabin". The 120 x 36' basement became one of the most amazing auto restor
Old poles make great supports for 4 squares using elevated radials. Attach a 2 x 6 crossarm as a ladder support and even construct a small equipment platform for tuning. The utility companies have to
Spraying while climbing is one sure way of getting stung and possibly landing on your head. It is the end of the season and they are swarming to the heat radiated by the tower. They are non threateni
I have a chance to pick some new old surplus at a great price. How does it compare to 45G as far as wind loading, torque and guy spacing? These appear to have been assembled in 60' sections with guy