Weekly 19 Set CW Nets
Updated
May 16, 2011
All stations are welcome to participate in CW operations during the “19
Set Net” (19SN) each MONDAY night on 3607 kHz at 2000 hours Eastern Time.
This net provides training opportunities to enhance your Morse code
skills. A 19 Set is not needed to
participate; however, be prepared to hear the distinctive 'chirp' of those
wonderful old WWII “boat anchors”.
Note that this is a directed net and the NCS (Net
Control Station) directs ALL activity.
CW speed is to be kept under 15 WPM with a generous space between
words. Also, be sure to accurately
zero-beat on NCS. Because the W.S.
No. 19 is not a “QRK” rig, it is necessary to give a generous pause between
receiving and transmitting. Please
read and comply with the net procedures found below.
Wireless
Set No. 19 Group
CW
Net Procedures
(version
2.4 – 25 Oct 2010)
INTRODUCTION
1.
Background. Since October
1991, the Wireless Set No. 19 Set Group has conducted monthly voice nets for the
benefit of anyone interested in collecting, restoring and operating vintage
military communications equipment.
Those
nets have operated primarily with modern equipment but with the occasional
demonstration of vintage gear. During
those demonstrations, the need for additional CW net expertise became apparent.
As a result, a weekly CW training net was initiated on 11 September 1995.
This has provided needed training as well as a regular opportunity for
members to log contacts for the Vintage Operator's Award program.
2.
Accessibility. It has been
argued that to fully appreciate military equipment, it would be best to operate
under the same rigid procedures as were used during the operational life of the
particular sets. This creates a
problem in that such a net would be accessible only to those who had spent
considerable time in studying WWII military procedures. In addition, such things
as daily-changing call signs, link call signs, coded messages, authentication
and obscure prosigns are incompatible with the amateur radio service.
Therefore, the 19 Set Net operates under amateur radio rules, however it
does so with as much of a military flavour as possible.
3.
Aim. This paper details the
procedures used by the Wireless Set No. 19 Group during its Morse code nets.
4.
Tuning. All stations must
maintain radio silence until NCS opens the net.
Preliminary transmitter adjustment must be made off-air (i.e. into a
dummy load). Antenna tuner
adjustments can be made ahead of time with appropriate settings noted in the
logbook for future reference. Initial
variometer tuning can be done by ear. An
alternative to on-air tuning is to use a non-radiating device such as a noise
bridge to make antenna tuner adjustments. On-air
tuning is usually unnecessary and often creates interference which obscures
transmissions from the Net Control Station.
With preliminary adjustments made off-air, the out-stations make their
final adjustments in response to the NCS sending the “ZYT” operating signal.
b.
Text. This is the
information portion of the transmission. It
should be as short as practicable (normally not more than 50 words) and be
restricted to one subject. As some
of the out-stations may be copying in their head, the use of long words and
unusual abbreviations should be avoided. If
there is a conflict, the requirement for clarity will always take precedence
over the desire for brevity. The
conclusion of the text portion of the message is indicated by sending the
prosign “ar”.
c.
Speed. The net operates with a word
speed of 15 WPM (Farnsworth spacing). Emphasis
is given to consistent, precise keying so that information may be passed as
accurately and efficiently as possible. While
the Morse speed is relatively slow, the overall pace of net activity is high.
(5)
Special procedures exercises (QSY, QNA, QNV, etc)
(6)
Informal chat, gossip, etc.
9.
Procedural Signs (Prosigns).
10.
Abbreviations.
11.
Collective Call.
When operating conditions are poor, adopting the following procedures may
be helpful:
b.
Switch to using full call signs (this gives the receiving station an
opportunity to make minor equipment adjustments and to become fully attuned to
the sender’s fist before important information is sent).
c.
Switch to “words twice” mode
d.
Simplify and shorten the text of the message as much as possible.
CONCLUSION
14.
Adherence to the above procedures will permit the net to operate
efficiently. While every eventuality
has not been covered, direction for some specific situations has been given and
general guidelines have been offered that will be helpful in other situations.
15.
Remember that the objective is to communicate.
Any action by an operator that detracts from that goal, either
intentionally or otherwise, must be avoided.
The one overriding principle is that clarity must always take precedence.
ANNEX
"A" to CW Net Procedures, 25 Oct 2010
Operating
Signals, Prosigns & Abbreviations
1.
Q & Z Operating Signals
e.
QSB - your signal is fading
f.
QSL - acknowledge receipt
g.
QSY - change to frequency (xxxx kHz)
h.
QTC - I have messages for you
i.
ZYT - tune antenna now
2.
QN (net) Operating Signals
d.
QNF – the net is free
f.
QNN - Net Control Station is (call sign)
g.
QNS - following stations are in the net (list)
h.
QNV – make contact with (call sign) on this frequency. If successful,
QSY and receive traffic
i.
QNZ - zero beat on
this signal
3.
Procedural Signs (Prosigns, sent as a single character)
a.
ar - end of text portion of the message
b.
as - stand-by
c.
bk - short break
d.
bt - separation
e.
cl - closing station
f. cq – all stations
g.
g - read back
h.
hm - radio silence, all out-stations stop transmitting
i.
imi – I say again
j.
k - over (to any station)
k.
kn - over (to specific station only)
l.
sk - end of contact
4.
Abbreviations
a.
c - affirmative, correct
b.
n - negative, not correct
c.
r - message received and understood
d.
wilco – message received, understood and will be comply with
ANNEX
"B" to CW Net Procedures, 25
Oct 2010
1. 19
Set Net - Call-Up
19SN
19SN 19SN 19 set net =
QND =
QNN
VA3ORP =
QNZ (15
seconds of carrier for zero-beating) =
ZYT (15
second pause while out-station tune) =
QNI
k
CBK (ve3cbk checks in)
BBN (ve3bbn checks in)
NU (w1nu checks in)
CBK BBN
NU r as
19SN QNI
k
(no
further check-ins heard)
19SN de
ORP = QNS CBK, BBN, NU = ar
as
2.
Signal Reports
19SN de
ORP = QNA RST all stns ? bk
de CBK = all 5NN bk
de BBN = all 5NN bk
de NU = all 5NN except BBN 359 QSB bk
19SN de
ORP = r tnx ar
as
3.
Frequency Change
19SN de
ORP = heavy QRM here = QSY 3680 ? 3680 = QSA QSL?
bk
de CBK r bk
de BBN r
bk
de NU confirm 3780 ? 3780 bk
NU de
ORP = n n = QSY 3680 ? 3680 QSL?
bk
de NU
r bk
19SN de
ORP = QSY now sk
4. Pass
Informal Message Between Out-Stations
BBN de
ORP = pass your info to NU kn
ORP de RIH r
as
NU de BBN = name David QTH Niagara rig ws19 mk 3 serial
c76543
RST
478C = ar = g = NU kn
BBN de NU = g = David Niagara ws19 mk 3
C76543
RST 478C = ar = BBN kn
NU de BBN = c = tnx ar
ORP de BBN = message passed =
ORP kn
BBN NU de ORP =
r good exchange
ar
19SN de ORP as
ANNEX
"C" to CW Net Procedures, 25
Oct 2010
CW
Tuning Considerations
When tuning his radio the operator must have a clear understanding of the
internal functioning of the set. This
is especially so for sets that provide an automatic offset for CW operations.
When operating CW with most modern rigs, the set adjusts itself so that
when the dial frequency and the incoming frequency are the same, an 800 Hz audio
note is produced. This is known as
an automatic BFO offset and operates by the receiver being automatically tuned
LOW to deliver a beat note of 800 Hz. When
the set is switched to transmit, this offset is cancelled and the transmitted
signal matches the dial frequency.
This arrangement usually causes no problem except when trying to operate
CW to other stations that are receiving in LSB mode.
The other stations are "listening" to the band 250 to 2750 Hz
BELOW the dial frequency. If CW is
transmitted on the dial frequency, it will zero-beat with the LSB stations and,
being outside their audio passband, will not be heard.
To be heard, it is necessary to adjust the CW transmit frequency 800 Hz
lower than the LSB net frequency. With
a little bit of thought this can easily be accomplished when modern equipment is
used (either with dual VFOs in
A different problem exists when using vintage equipment like a W.S. No.
19. The CW netting
procedure for a 19 Set is as follows:
a.
zero-beat with mode switch in “R/T” and with the “Net” switch (BFO)
in the “on” position
b.
switch to CW and adjust the “Het Tone” for desired note.
When this is done, the BFO is automatically adjusted so that the set is
tuned below the frequency of the incoming signal (i.e. listening to the HIGH
side).
If the 19 Set frequency dial is adjusted to listen to a LSB signal (while
on R/T with the BFO on), the CW transmit signal will be produced in the zero
beat of the LSB stations. If the set
is adjusted to listen to a LSB signal while in CW mode, then the CW transmitted
signal will be 700 to 1700 Hz ABOVE the LSB net frequency.
Such signals will simply not be heard by the other stations.
In order for a 19 Set to make a CW check-in to a LSB net, it is necessary
to shift the frequency of the transmitted signal into the passband of the net
stations (i.e. down by about 800 Hz). This
is difficult to do with any precision, especially as this adjustment must be
cancelled in order to hear the LSB reply.
For a net operating in USB, the above problem would not exist.
Tuning in the USB stations while in CW (vice R/T) will automatically put
the 19 Sets transmitted signal in the passband of the USB receivers with a 700
to 1700 Hz tone (adjusted by the "Het Tone" control).
Out-stations must clearly understand the operation of their own equipment in order to manage the problem outlined above.
Compiled
by David Lawrence, VA3ORP, OIC The (Original) Wireless Set No. 19 Group.
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