I guess those who just copy antennas also donīt take the effort of calculations or measurements. 73 Peter, DJ7WW Sounds like they're specifying gain relative to isotropic, hence an extra 2.1 dB. 73..
No, R is too high, should read about 19 ohms in a lossless environment. I would improve the radial system to get the impedance lower and then use a 1:2 unun to transform to 50 ohms. 73 Peter, DJ7WW I
And end up with a pleasantly quiet signal Wow, All this Epsilon, Lambda, Sigma, and e" and e" stuff is a bit much for most of us lowly hams. Just put it up tune it for lowest SWR and have fun working
I would use >1Mohm resistors from both terminals to the boom. 73 Peter, DJ7WW I'm putting a Balun Design 1115t on an A4s. Here is the Ozarks, we have *lightning!* But I want to put a resistor across
Metric sizes do telescope but with larger wall thicknesses like 2 and 1.5mm. 73 Peter, DJ7WW --Original Message-- From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Grant Saviers
My 40m yagi is 5m above the 15m yagi and influences the front to back on 15m, but by far less then the second 15m yagi 14m below it. 73 Peter, DJ7WW Why would the 40m beam be effected by the 15m? It
What is the simulated radiation resistance with only 32 radials? Resistance above 37 ohms reduce the efficiency. I needed >90 radials on my 160m and 80m verticals to bring it below 40 ohms. 73 Peter,
I had the problem with a not engaged worm with 3 of my 4 PST2051. https://a4.pbase.com/o6/91/283791/1/76698259.eZnxkcm3.pst2051.JPG 73 Peter, DJ7WW If the worm wasn't engaged, the rotation would be u
I use 4 direction guying only. Main advantage for me I can erect my towers without helpers by using fallen derrick raising methode. Second advantage I can use 60% guy anchor radius without having to
Some manufacturer call it different. The inventor RFS calls it Cellflex LCF12-50J https://awbroadcast.com/produkt/rfs-cellflex-lcf12-50j-kabel/ 73 Peter, DJ7WW Is LDF4-50 still available? Or has it b
The inventor calls it Heliflex nowadays, was Flexwell before. https://www.rfsworld.com/searchengine/3-1 73 Peter, DJ7WW Its both. https://scmsinc.com/product/andrew-hj8-50b-3-air-cable/ Jim W7RY On 1
Hi Jim, Max Gain Systems typically sell good quality stuff. I donīt know about the adapters in particular but everything I or friends bought there were excellent. https://mgs4u.com/product/type-n-fem
I use Cellflex 1/2" cable on my crankup tower for more then 25 years 73 Peter Does anybody make a version of LMR-600UF that has a decent outer jacket on it....like what's used on RG-213U ?? The outer