It may be good to decouple the inverted-Vs from the tower. This would involve a tuned trap at each feedpoint made up of the feed coax and a resonating capacitor. See ON4UNs Low Band DXing, 5th editio
The base insulator is certainly the most effective way to detune, and the most efficient way to drive the tower, but it is nice to have the tower grounded and use shunt feed. You can detune the tower
I experienced long delayed CW echos once on 20m, back in the 1980s before there was much wireless stuff. Also, I lived in the country with no close neighbors. The delay was significant because I was
I installed a vanity in a old house in New London, CT. The BX only had 2 wires for the original light & 2-prong outlet. Fortunately the jacket was grounded although it had never been connected to the
JT-65 is a QRP mode, like WSPR where I use10W. High power can ruin it for everyone else. Read the documentation. On 3/17/2017 8:36 AM, Lennart m wrote: I do not agree with you Pedro. More is not alwa
Google "garden staples ebay". $11.50/100 free shipping. Yes, I can raise blade cut to 3 inches. I prefer a closer cut for neatness. However, I am contemplating pinning the wire with DXE ground staple
This may sound strange, but my opinion is that hams like the musical tones of JT65. I cannot understand why JT9 is used so little on 160 thru 20. JT65 is a VHF mode. physics.princeton.edu/pulsar/K1JT
True enough, but time marches on. This is similar to the discussion about whether Columbus or Captain Cook would have used GPS if it had been available, or instead navigated without it just for the c
10 Watts is considered high power on the digital modes. Is using 1000 Watts on 160m (+20dB) and 250Hz receive filters (+10dB) on both ends of a CW QSO more challenging than 10W on JT65 on the same li
I erected a 50 ft self-supporting grounded aluminum tower last fall, with a triband beam as a top load. I installed 137 radials 30m long (because I could!). I first shunt fed it on 160m and it works
I installed buryflex along with direct burial control cables last year. I learned that it is best to directly bury the cables without conduit. Water from condensation will eventually fill the condu
I have used NEC4 to model my short 50 ft tower for shunt feed on 160, 80, and 40 meters. It has a small triband beam with all elements grounded. The 160m shunt wire goes to the top, of course, and
I think that digital modes such as FT8 are a boon to hams in homes with covenants, allowing them to work the world with minimal, even indoor, antennas and QRP power levels. For them, at least, the ch
You can put the diode directly across just the LED if the relay speed is important. The LED series resistor won't slow it much. If you use an LED with a dropping resistor across the coil to monitor
I am sure that some rigs use an "open drain" MOSFET instead of a "normal" transistor. The built-in "body diode" of the MOSFET acts as a built-in snubber for the reverse polarity transient, and shoul
I have a 1000 ft bi-directional beverage that is built with RG-6 with steel messenger wire. The wire seems to have no electrical effect but makes the beverage really strong. A transformer at the fa
Solid copy in Northern VT. Obviously a bad connection. I want their antenna! de steve VE6WZ. Is anyone copying a AMBC stn around 1810kc. They are 30db over S9 here. The sig was cutting in and out bu
My guess is also the steel wires, which have very poor conductivity at HF compared to copper. Aluminum fence wire is also not a good choice and would likely literally dissolve if buried, depending o
I used the same source twice and was very pleased. Brian W1IR On 2/12/2018 9:15 AM, cqtestk4xs-- via Topband wrote: After getting a four square for 80 radial system buried and now starting the 160 sy
I agree about the pie. I have done a bit of reading. Their experimental station will use a 50kW broadcast xmtr to (they say) generate a Zenneck surface vertical EM wave with little radiation loss i