[TransAtlantic] /B Efforts

[Stan, W1LE]

Hello The Net:

Anyone who puts up a beacon is a hero, as far as I am concerned.
Beaconing takes a lot of effort with little feedback.

If you were to go the horizontally polarized omnidirectional antenna
I would prefer a stacked array ( X4, X8) to put more of the energy to 
the horizon
instead of towards outer space.

FN41sr   W1LE on Cape Cod, to HM68ir:
LOB to: 80.6 degrees, ref true north
LOB from: 289.3 deg
DX in miles: 2,268.6
DX in Km: 3,651.0

For me , there is merit in a frequency stabilized transmitter.
With freq stability better than 7 parts in 10EE10, (about 1 Hz at 144, 
285,000 Hz)
  I can use DSP for processing, like the ARGO program for the PC
with a processing bandwidth less than 1 Hz and the significant 
improvement in S/N.
A QRSS, long dash CW modulator at the TX end allows a improved 
integration time at the RX.
The K1EL beacon keyers lend themselves to QRSS and faster CW modes.

Right now on 137, 185 and the 500 KHz experimental bands, it is common 
to have beacons spaced ~1 Hz apart.
The frequency stability to an external reference is important.

A frequency stabilized transceiver like the IC-706 or the IC-910H could 
use a
10 MHz house reference standard like a Rb or xtal oscillator.

There is also merit to using a K1JT modulation scheme as in the WSPR 
beaconing system.
Others in the UK and Sweden have implemented WSPR in a simple /B,
without needing or dedicating a transceiver to the project.

Other /B modulation schemes that take advantage of DSP include WOLF.

More food for thought.

Stan, W1LE on Cape Cod




ZZZZz