COMMISSION RULES
COMMISSION RULES
Amateur Space and Earth stations; telemetry and telecommand rules; identification of balloon transmissions; one-way communications
What is the definition of telemetry?
Coming from the prefix "tele" (distant) and the suffix "metry" meaning "the process, art, or science of measuring", telemetry is no more than simply "distance measurements".
Hint: a meter is a unit of measurement
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Which of the following may transmit encrypted messages?
§97.113 Prohibited transmissions.
(a) No amateur station shall transmit: ... (4) Music using a phone emission except as specifically provided elsewhere in this section; communications intended to facilitate a criminal act; messages encoded for the purpose of obscuring their meaning, except as otherwise provided herein; obscene or indecent words or language; or false or deceptive messages, signals or identification.
§97.211(b) A telecommand station may transmit special codes intended to obscure the meaning of telecommand messages to the station in space operation.
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What is a space telecommand station?
FCC 97.3(a)(44) Telecommand station. An amateur station that transmits communications to initiate, modify or terminate functions of a space station.
Tip - The only answer that contains the words “space station”
Tip2 - A “telecommand” station must be making commands. The correct answer is the one that includes a list of potential commands, “initiate, modify or terminate”.
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Which of the following is required in the identification transmissions from a balloon-borne telemetry station?
There are no specific requirements for a balloon beyond those for any aircraft. Therefore like any amateur station, the balloon-borne station must identify with its call sign.
Hint: since a balloon is intended to move (if it were tethered, it would be an aerostat), it doesn't have a unique Maidenhead grid locator. Therefore, it's not reasonable for all choices to be correct. The call sign is always required, so it can't be the wrong answer. Therefore it must be the unique right answer.
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What must be posted at the location of a station being operated by telecommand on or within 50 kilometers of the Earth’s surface?
§97.213 Telecommand of an amateur station.
(d) A photocopy of the station license and a label with the name, address, and telephone number of the station licensee and at least one designated control operator is posted in a conspicuous place at the station location.
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What is the maximum permitted transmitter output power when operating a model craft by telecommand?
§97.215 Telecommand of model craft.
(c) The transmitter power must not exceed 1 W.
Hint: model craft are nearby and usually line-of-sight, so only low power is needed.
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Which of the following HF amateur bands include allocations for space stations?
The correct answer is ALL HF bands 40 Meters and above EXCEPT for 30 meters.
From §97.207-
(c) The following frequency bands and segments are authorized to space stations:
(1) The 17 m, 15 m, 12 m, and 10 m bands, 6 mm, 4 mm, 2 mm and 1 mm bands; and
(2) The 7.0-7.1 MHz, 14.00-14.25 MHz, 144-146 MHz, 435-438 MHz, 2400-2450 MHz, 3.40-3.41 GHz, 5.83-5.85 GHz, 10.45-10.50 GHz, and 24.00-24.05 GHz segments.
The only answer with 10, 12, 17 meters
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Which VHF amateur bands have frequencies authorized for space stations?
From Part 97.207 Space Station::
(c) The following frequency bands and segments are authorized to space stations:
...
(2) The 7.0-7.1 MHz, 14.00-14.25 MHz, 144-146 MHz, 435-438 MHz, 1260-1270 MHz, and 2400-2450 MHz, 3.40-3.41 GHz, 5.83-5.85 GHz, 10.45-10.50 GHz, and 24.00-24.05 GHz segments.
144-146 MHz covers a portion of the 2 meter band.
For your general education, note that the following spectrum is also authorized to space stations:
(1) The 17 m, 15 m, 12 m, and 10 m bands, 6 mm, 4 mm, 2 mm and 1 mm bands;
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Which UHF amateur bands have frequencies authorized for space stations?
Part 97 : Sec. 97.207 Space station
Part 97 Sec. 97.207 Space station (c) The following frequency bands and segments are authorized to space stations:
(1) The 17 m, 15 m, 12 m, and 10 m bands, 6 mm, 4 mm, 2 mm, and 1 mm bands; and
(2) The 7.0–7.1 MHz, 14.00–14.25 MHz, 144–146 MHz, 435–438 MHz (70 cm) , 2400–2450 MHz (13 cm), 3.40–3.41 GHz, 5.83–5.85 GHz, 10.45–10.50 GHz, and 24.00–24.05 GHz segments.
Silly memory tool: In 1970 (70cm) Apollo 13 (13cm) had a problem.
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Which amateur stations are eligible to be telecommand stations of space stations, subject to the privileges of the class of operator license held by the control operator of the station?
§97.211 Space telecommand station.
(a) Any amateur station designated by the licensee of a space station is eligible to transmit as a telecommand station for that space station, subject to the privileges of the class of operator license held by the control operator.
Memory aid: Both the question and the correct answer have "space station" in them. "Any amateur station so designated by the space station licensee"
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Which amateur stations are eligible to operate as Earth stations?
FCC 97.209(a) Any amateur station may be an Earth station. A holder of any class operator license may be the control operator of an Earth station, subject to the privileges of the class of operator license held by the control operator.
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Which of the following amateur stations may transmit one-way communications?
Memory tip: There is only one answer with the word "beacon." Think of a lighthouse beacon: it can send a signal only one way ("Danger! Shallow water!").
97.211 Space telecommand station. ... (d) A telecommand station may transmit one-way communications.
97.201 Auxiliary station. ... (e) An auxiliary station may transmit one-way communications.
97.203 Beacon station. ... (g) A beacon may transmit one-way communications.
97.207 Space station. ... (e) A space station may transmit one-way communications.
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