Park Air Systems T6TR, User Documentation

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T6TR VHF 50 W Transceiver Page 8 Specification
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Spurious signal suppression The spurious signal suppression (reference 12 dB SINAD) is 80 dB, or
greater (typically >100 dB) for a 30% modulated unwanted signal. This
applies to unwanted signals up to 2 GHz and spaced by more than two
channels from the tune frequency.
Above 2 GHz, spurious signal suppression is 70 dB or greater
(typically >100 dB).
Image response rejection is 80 dB or greater.
IF response rejection is 80 dB or greater.
Interfering signals At least 6 dB SINAD is achieved for a wanted -87 dBm signal
modulated with a 1 kHz tone 30% in the presence of two -5 dBm
interfering signals. The two signals are both FM modulated, one with
a 19 kHz tone 7.5 kHz deviation at 107.9 MHz and varied by ±4 kHz
the other with a 19.1 kHz tone 7.5 kHz deviation with its frequency
chosen such that one of the 3
rd
order products is located on the
chosen receive frequency.
Antenna Radiation
All variants Radiation at the antenna socket is less than -81 dBm, typically less
than -100 dBm, within the frequency range 9 kHz to 4 GHz.
Maximum RF input
All variants The transceiver can withstand an RF input of +36 dBm for 20 seconds,
and a cont27 dBm input, without causing damage.
Receive Modulation Characteristics
The receive modulation characteristics are as follows:
Mode
AM-Voice The AM-Voice mode uses Double Side Band (DSB) Amplitude
Modulation (AM) full carrier, emission designator 6K80A3EJN for
25 kHz channels and 5K00A3EJN for 8.33 kHz channels.
AM-MSK The AM-MSK mode uses Double Side Band (DSB) Amplitude
Modulation (AM) full carrier, emission designator 13K0A2DJN.
Frequency Response
25 kHz channel spacing The variation in frequency response with reference to a 1 kHz signal,
is 1 dB and -2 dB across the frequency range 300 to 3400 Hz.
The response is less than -20 dB for frequencies at or below 100 Hz,
and less than -30 dB at 4 kHz and above.
8.33 kHz channel spacing The variation in frequency response with reference to a 1 kHz signal,
is 1 dB and -2 dB across the frequency range 350 to 2500 Hz.
The response is less than -10 dB for frequencies at or below 100 Hz,
and less than -30 dB at 4 kHz and above.