North American HSMS calling frequencies: 50.300 MHz, 144.100 MHz. North American FSK411 MS calling frequencies: 50.270 MHz, 144.140 MHz, 222.???. |
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A |
1 |
F |
6 |
K |
11 |
P |
16 |
U |
21 |
Z |
26 |
B |
2 |
G |
7 |
L |
12 |
Q |
17 |
V |
22 |
|
|
C |
3 |
H |
8 |
M |
13 |
R |
18 |
W |
23 |
|
|
D |
4 |
I |
9 |
N |
14 |
S |
19 |
X |
24 |
|
|
E |
5 |
J |
10 |
O |
15 |
T |
20 |
Y |
25 |
|
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Usage of CQx Letter System: |
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When you hear a reply on your listening frequency, immediately shift your transmitting frequency to that frequency and make your QSO. When finished, you may call QRZ on your listening frequency, or return to your CQ frequency and resume CQing for another QSO. |
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Note: The use of listening (and schedule) frequencies close to the calling frequency should be avoided to reduce the possibility of QRM from other stations calling CQ. |
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FSK411 - The same basic procedure is used, except "CQ Uxx" or "CQ Dxx" is used. E.g., "CQ U5" means "I'm listening and will reply Up 5 kHz," the same as "CQE"; "CQ D8" means "I'm listening and will reply Down 8 kHz". (HSCW frequency is always given as the ZERO-BEAT Frequency. FSK frequency is the DIAL Frequency). The CQ-Letter system works best on HSCW. The Uxx/Dxx system works best on FSK. |
REQUIREMENTS FOR A QSO: An exchange of both call signs, an exchange of some type of information or report, and an exchange of confirmation of reception of the report or information. |
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When a station copies : |
he sends: |
less than both calls |
both calls: E.g., W8WN KOØU W8WN KOØU... |
both calls |
both calls & report: E.g., W8WN 26 KOØU 2626.... |
both calls & report |
Roger & report: E.g., R27 R27 R27 ... |
Roger & report |
Rs: E.g., RRR RRR RRR... |
Rogers (you need at least two, or a very definite Roger, to be sure! CW, FSK, and voice can all be chopped up) |
73s: E.g., 73 73 73... |
73 (73s not required for contact; but other station doesn't know it's complete until he hears a 73 [or CQ]). |
he may QRT. Or, if he has been calling CQ, begins CQing again, etc. |
A typical HSCW MS exchange : |
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W8WN calls CQ for one minute on 144.100: CQJ W8WN CQJ W8WN CQJ W8WN... |
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N1BUG calls W8WN for one minute on 144.110: W8WN N1BUG W8WN N1BUG W8W... |
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W8WN copies N1BUG calling on 144.110; so he shifts his transmitter frequency to 144.110 and sends calls and report to N1BUG for one minute on 144.110 Mhz: N1BUG W8WN 26 N1BUG W8WN 26... |
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N1BUG copies both calls and the report and sends, for one minute and with no calls: R 27 R 27 R 27 R 27 R ... |
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W8WN copies R and report and sends, for one minute: RRRRRRRRRRRRRRRRRRRRRRRR... |
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N1BUG copies R's, and the QSO is complete. Note that if N1BUG has not copied Rs, he would continue sending R 27 R 27, etc. so that W8WN will keep sending R’s. N1BUG should send 73 during the next transmitting sequence or two to tell W8WN that he has everything. |
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W8WN copies the 73s and replies with a few periods of 73s, then both quit sending and complete their log sheets. (He may wish to send QRZ? and listen for a moment before returning to 144.100 to call CQ again). |
MISSING INFORMATION: |
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BBB |
B oth callsigns needed |
MMM |
M y callsign needed |
YYY |
Y our callsign needed |
SSS |
S ignal Report Needed (Note: Signal Report is your grid in the NA HSMS Contest) |
UUU |
Your keying is Unreadable |
When used, nothing but the appropriate string of letters is sent. The other operator should respond by sending only the requested information. When the requesting station has the needed data, he returns again to the proper exchange sequence. |
Approximate ANTENNA ELEVATIONS for maximum signal at various distances: For offsets in azimuth, see OH5IY's MSSoft MS program. | 1000+ miles (1600+km) - 0º | 800 miles (1300 km) - 5º | 600 miles (1000 km) - 10º | 400 miles (650 km) - 15º |