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DESCRIPTION
The RR-2 19" rack mounted is similar
to the RR-1 but with continuous coverage provided by a frequency
synthesizer which generates an injection signal every 500kHz and PTO
which tunes a 500 kHz range. PTO over-travel allows an additional 50 kHz
off each band edge. The RR-2 is classified as a marine
"reserve" (i.e. backup) receiver.
( Source : Radiomania
Books)
SPECIFICATIONS
Thanks to : John Morrison
 | Frequency Range: 150
kHz - 30 MHz |
 | Modes of Operation:
USB, LSB, AM, (RTTY with RY-4 accessory installed). |
 | Frequency Accuracy: Within
+- 1 kHz when receiver is calibrated to the nearest 100 kHz
point, against the internal 100 kHz calibrator. |
 | Frequency Stability:
Less than 100 Hz for any 8 hour period after warm-up at 25°C
ambient temperature, with less than +- 10% variation in supply
voltage. |
 | Sensitivity : (a) Antenna
impedance, 10 Ohms in series with 250 pF. |
| Frequency
MHz |
MODE |
emf
micro Volt |
S
+ N/N db |
|
.15 - .20
|
A3, 30% mod., 4.8
kHz BW |
40 |
>=10 |
| A3J, 2.4 kHz BW |
10 |
>=10 |
| .20
- 1.5 |
A3 |
10 |
>=10 |
| A3J |
2.5 |
>=10 |
| 1.5
- 4.0 |
A3 |
25 |
>=20 |
| A3J |
5 |
>=20 |
 | Sensitivity : (b) Antenna
impedance, 50 Ohms unbalanced. |
| Frequency
MHz |
MODE |
emf
micro Volt |
S
+ N/N db |
|
4.0 - 5.0
|
A3 |
5 |
>=20 |
| A3J |
1 |
>=20 |
| 6
- 26 |
A3 |
5 |
>=20 |
| A3J |
1 |
>=20 |
| 26
- 30 |
A3 |
10 |
>=20 |
| A3J |
2 |
>=20 |
Above emf values are open circuit
voltages.
 | Image Rejection:
Better than 60 dB below 15 MHz. Better than 50 dB above 15 MHz |
 | RF Blocking: An
undesired, unmodulated signal, 100 dB above 1 micro volt 20 kHz
above or below desired signal will not reduce the desired signal
more than 3 dB, as measured at the receiver output. The desired
signal has a level of 60 dB above 1 micro volt and is modulated
30% at 1 kHz. |
|
 | Crossmodulation: an
undesired signal 90 dB above 1 microvolt, modulated 30%, at 1
kHz at a frequency removed more than 20 kHz above or below a
desired A1 (CW) signal, at a level of 60 dB above 1 micro volt,
will not produce interference greater than 30 dB below standard
output for the desired signal. |
 | Intermodulation: Between
405 and 535 KHz, two interfering signals must have a level of 80
dB above 1 micro volt or more to give products equal to standard
output. The reference signal for this measurement is 20 dB above
1 micro volt. Between 1.5 and 30 MHz, the interfering signals
must be 65 dB or more above the reference signal of 30 dB above
1 micro volt. |
 | Selectivity : |
| |
IF Bandwidth |
|
Mode |
-6 dB |
-60 dB |
|
CW Narrow |
0.4 kHz |
2.7 kHz |
|
CW Broad/LSB |
2.4 kHz |
7.2 kHz |
|
USB |
2.4 kHz |
7.2 kHz |
|
AM |
4.8 kHz |
10 kHz |
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