Park Air Systems T6TR, User Documentation

Page: 15 / 136

T6TR VHF 50 W Transceiver Page 5 Specification
Back to Transceiver
Main Page
Spurious Outputs
All variants The spurious outputs are less than -46 dBm for modulation depths up
to 90%, measured at greater than 500 kHz from carrier in the
frequency range 9 kHz to 4 GHz. There are no coherent spurious
outputs above the spectral mask at less than 500 kHz.
Intermodulation
All variants Intermodulation products, caused by an interfering signal with the
same power as the transceiver isolated by 30 dB, are at least -40 dBc
at
≥
±150 kHz and -50 dBc at
≥
±500 kHz.
Transmit Modulation Characteristics
The transceiver transmit 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.
Modulation Depth
All variants The transmitter modulation can be set to a maximum of 95%. This
eliminates any interference in adjacent channels at 25 kHz or
8.33 kHz channel spacing.
Hum and Noise
All variants The hum and noise is more than 45 dB below the signal level for line
input levels <-13 dBm, and more than 50 dB below the signal level for
line input levels
≥−
13 dBm, for a carrier modulated by a 1 kHz signal
with a modulation depth of 90%.
Frequency Response
25 kHz channel spacing The variation in frequency response with reference to a 1 kHz signal
is 0.5 dB and -1.5 dB across the frequency range 300 to
3400 Hz. The response is also less than -20 dB at 100 Hz and below,
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 0.5 dB and -1.5 dB across the frequency range 350 Hz to
2500 Hz. The response is also less than -10 dB at 100 Hz and below,
and less than -30 dB at 3200 Hz and above.