That is surprising since the C3 has an 18' boom and uses only a portion of it on each band and the TH7 has a 24' boom and uses most of it. I had not read the K7LXC/N0AX report and did not know this.
already ran that test. N6BT ran the test as well, using a spectrum analyzer at the RX end, with SA set to 2db per division. The raw data in the 2nd Edition of the N0AX/K7LXC reports does not support
On Mon,2/23/2015 11:34 PM, Jim Thomson wrote: another method that works superb is to shut OFF the RX agc at the RX end. Then back down the RF gain a whole bunch. Then apply the rx audio to standard a
Great, now people are going to accuse others of TH7DXX-bashing... ;=) The TH7DXX is obviously a successful product of its pre-modelling era. Lots of people have had success with it. So this isn't bas
Great, now people are going to accuse others of TH7DXX-bashing... ;=) The TH7DXX is obviously a successful product of its pre-modelling era. Lots of people have had success with it. So this isn't bas
Author: David Gallatin via TowerTalk <towertalk@contesting.com>
Date: Thu, 26 Feb 2015 02:08:50 +0000 (UTC)
Kelly, could you please give some examples of the antennas you are talking about that are "a smaller, computer-modelled, trapless interlacedmulti-monobander" ? 73, David, AA9G ex W5DCG and KC9EEV
I'm not Kelly, but I'll some. The Force 12 C3, C3S, C3SS, C31XR, C19XR, and C4XL, are well respected antennas. The oldest of these designs date from the late 90s. Force 12 has recently changed hands
It is not easy to design interlaced multiband beams and N6BT did a great job. He also designed many OWA monobanders when other manufactures were still using matches. Unfortunately customer service wa
I'm not Kelly, but I'll some. The Force 12 C3, C3S, C3SS, C31XR, C19XR, and C4XL, are well respected antennas. The oldest of these designs date from the late 90s. Force 12 has recently changed hands
Could it be that LMR400 wasn't available or too expensive way back when the Mosley manual was written? Sent from Outlook I had a similar setup (except mine was a PRO-57A) and had similar excellent r
Interesting information Jim. If I were in the market for a tribander I would definitely buy the K7LXC report. One potential problem with interlaced beans is that there appears to be little room for s
I have a TH7DXS at 72 and and a A3WS at 78 feet. With 80 MPH gusts and sustained winds often in the 50's and 60's during the winter here on the ocean the elements move around a lot - have not had one
Other examples of trapless multi-band antennas include the DX Engineering Skyhawk, designed by K3LR, the new line of N6BT antennas (the DX4r, etc.) as well as the multiband antennas from JK Antennas
On Thu,2/26/2015 2:14 PM, john@kk9a.com wrote: Interesting information Jim. If I were in the market for a tribander I would definitely buy the K7LXC report. One potential problem with interlaced bean
On 2015-02-26 2:29 PM, Kelly Taylor wrote: It's also been fairly well established down through the ages that an optimized 2 el. monoband yagi equals or betters a three-element tribander, owing to the
The C3 has an insulator that grabs and spans across the close spaced elements and keeps them from banging together. The process is also described in the Array of Light book. Chris KF7P Interesting in
Since the Skyhawk was mentioned, as well as the subject of ice and wind, it may be that ice loading and the lack of a truss system will lead to catastrophic failure of the Skyhawk boom. I have pictur
Could it be that LMR400 wasn't available or too expensive way back when the Mosley manual was written?? would work. As long as its 50 ohms, and flexible, it will work. For folks with rotary towers, r
I have a TH7DXS at 72 and and a A3WS at 78 feet. With 80 MPH gusts and sustained winds often in the 50's and 60's during the winter here on the ocean the elements move around a lot - have not had one
Interesting information Jim. If I were in the market for a tribander I would definitely buy the K7LXC report. One potential problem with interlaced beans is that there appears to be little room for s