Author: "Michael, Dana A" <dana.michael@tycoelectronics.com>
Date: Mon, 26 Feb 2007 13:00:02 -0500
During this weekends CQ160WW SSB contest I was using my TX Tee antenna as my first choice for RX when "running" then switching to my short Beverage antennas as needed to pull out the stations. But th
I try to listen on the Beverage that points in the direction from which I hope to hear some DX. Then I tune around with the RIT to make sure the ESP isn't manufacturing a signal. If its a mixed dome
** My station & my operating habits are HARDLY "...de rigueur" when it comes to contests...! However, my mainstay transmitting AND receiving antenna is a 135-degree / 3-element phased inverted "L" a
"running" I have two transmit antennas for 160 -- a vertical, and a dipole at 90 ft. The vertical is by far the most effective within a few hours of sunrise or sunset. My default RX is whichever of t
I think if you check back a few weeks you'll find a pretty good explanation from Tom, W8JI, on why that happens. A quick summary is that, in the hour or so just before sunset, your signals headed eas
Author: topband-bounces@contesting.com (by way of Bill Tippett<btippett@alum.mit.edu>)
Date: Tue, 27 Feb 2007 17:43:44 -0500
At W8JI for the CW contest I spent probably 95% of the time Europe was opening listening to some directional RX antenna pointed at Europe. I would trust my ability to hear weak signals to tell me I m
True and not true, it happens all the time here and you can tell that the stations in question are most of the time listening on a EU or ? antenna, reason I say that is I have worked carribean of fa
I never said it was a difference in absorption. I said it was because noise levels and QRM levels are higher at the dark location. The D layer attenuates the QRM and noise at the daylight spot the sa
de N5OT: -- The last statement above depends on the operator, location, propagation and noise. Here in the Midwest, I have found listening with different antennas in two receivers highly productive -
Your explanation is solid on all counts, and I'm sure you're right as far as that goes. BUT: What I'm talking about is different -- the propagation is there, west coast signals ARE above the noise an
Hello All, What do you use as a "RUN" antenna in the CQ 160 contest? I tried using my TX TEE but my neighbor now has a plasma TV and all I hear is that thing. How can they pass emmission testing and
The best omnidirectional "RUN" setup for 160M is using a transceiver with dual high performance receivers in stereo diversity so you can listen with two antennas simultaneously. I've used both the K3
Mike, I use a short (450') E/W bi-directional beverage when running. This is antenna is a single-wire with transformers at both ends, feeding two co-ax runs to the shack. The lines go into a switch
Diversity IS the way to go** But if you lack the capability, you need an additional RX antenna that covers more directions and/or vertical angles. In my 18x22ft large garden I use a Wellbrookloop on
I use the receive loop I wrote about in the National Contest Journal a few years ago. I rotate it to null out the noise du jour. You can vary the placement of the loop in your yard to best avoid the
ALA1530S+ However, It does need proper common mode filtering. And required secure detuning of my TX antenna to clear out re-radiated noise. 73 Mark, PA5MW ____________________________________________
I forgot one more issue; being it an amplified wideband RX loop, it needed a 160m bandfilter on the output in my case. Too many -30dBm BC signals from MW and several SW bands. That lowered its noise
It looks like Part 15 has separate rules for emissions conducted back onto the power line (15.107) and emissions radiated into the environment (15.108). The "radiated emissions limit" section does no