[Elecraft] Changes from 100 watts to 10 watts

Frank LaFranco W6NEK [email protected]
Sat Dec 28 15:17:05 2002


Hello all,
The statement that beacon station 4U1UN is operating on 28.200 MHz is an
over simplification because the NCDXF beacon station referred to is only one
of 18 beacon stations, spread through the world, which rotate transmitting
on this assigned frequency.  On 28.200 MHZ, the New York beacon station
4U1UN transmits 40 seconds past the hour for a period of 10 seconds.  It
then repeats the 10 second interval every 3 minutes.  During that 3 minute
period, 17 other NCDXF world wide stations are transmitting on this
frequency.  Each of them also transmit for 10 seconds.  Therefore, in one 3
minute period, you have 18 worldwide beacons each transmitting ,one at a
time, for 10 seconds.  This is very useful for determining propagation
openings to various parts of the world in real time.  Each beacon will send
its call sign (at 22WPM) followed by 4 one second carriers at 100W, 10W, 1W
and 0.1Watt.  In addition, the same 18 world wide beacons transmit on other
HF bands.  These include 20 meters (14.100 MHz), 17 Meters (18.110 MHz), 15
Meters (21.150 MHz), 12 Meters (24.930 MHz) and 10 Meters (28.200 MHz).  If
you tune to these frequencies, be sure to place your rig in CW mode to
ensure you are listening to the displayed frequency.  The NCDXF HF Beacon
Network is a very valuable operating aid.  For more info on this network go
to: http://www.ncdxf.org/beacon.htm

73... Frank - W6NEK

----- Original Message -----
From: <[email protected]>
To: <[email protected]>
Sent: Saturday, December 28, 2002 8:08 AM
Subject: [Elecraft] Changes from 100 watts to 10 watts


> This is a critique of the Elecraft K2/100
>
> Here are approximate changes on the NCDXF beacon
> going from 100 watts to  .1 watts.   The station is 4U1UN
> New York City on 28.200.   Antenna is a 4 element beam.
>
> S9   100 watts
> S8    10 watts
> S5    1 watt
> S3    .1 watt
>
> You are invited to listen to the NCDXF/ IARU beacon
> network and listen for yourself the actual change in
> signal level as the beacon goes fm 100 watts to 10 watts, 1
> watt and 100 mW, and then you can ask yourself if
> the 100 watt amplifier you just built, tested, and paid
> $$$$ for is worth it.   In day to day operation,  the idea
> of a K2 at 100 watts is questionable and you guys that
> are building the amplifiers or thinking about building the
> add-on units need to examine this further.  The smart
> guys are ones with the K2 left at the original QRP levels.
>
>
> N4SO
> Ken Brown
> Mobile, AL/EM50tk
> NorCal-20/5 watts/4 ele. beam
> [email protected]
>
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