RSSI Measured values
Source: AOR UK Ltd.
***
AR8200 Receive Signal Strength Indication (RSSI)
The following tables are taken from various AR8200s and are intended as an
indication of levels that can be expected and should not be taken as absolute.
The levels will vary for each set.
The first table of figures are for the S meter reading (presented as BLOCKS)
relative to RF input signal. The meter is divided into seven stepped blocks each
of which divide into two.
The second table of figures are the S meter (AGC) response relative to RF
input signal plotted from -120dBm to +10dBm which the set gives when a LM
command is given from a PC under Windows Hyper-terminal control. These figures
have been taken using an FM (carrier not deviated) at 145MHz.
AR8200 Series-1 (green cabinet) - early production
| Signal meter |
input signal
dBm |
equivalent signal
in uV |
| ½ block |
-117 |
0.32 |
| 1 block |
-113 |
0.50 |
| 1½ block |
-110 |
0.71 |
| 2 block |
-107 |
1.00 |
| 2½ block |
-105 |
1.26 |
| 3 block |
-102 |
1.78 |
| 3½ block |
-100 |
2.24 |
| 4 block |
-97 |
3.16 |
| 4½ block |
-95 |
3.98 |
| 5 block |
-92 |
5.62 |
| 5½ block |
-88 |
8.90 |
| 6 block |
-84 |
14.10 |
| 6½ block |
-80 |
22.40 |
| 7 block |
-69 |
79.3 |
|
input signal
dBm |
equivalent signal
in uV |
LM response |
| -120 |
0.22 |
115 |
| -115 |
0.40 |
126 |
| -110 |
0.71 |
140 |
| -105 |
1.26 |
151 |
| -100 |
2.24 |
162 |
| -95 |
3.98 |
171 |
| -90 |
7.07 |
179 |
| -80 |
22.40 |
191 |
| -70 |
70.70 |
200 |
| -60 |
224.0 |
205 |
| -50 |
707.0 |
210 |
| -40 |
2.24mV (2240.0) |
213 |
| -30 |
7.07mV |
215 |
| -20 |
22.4mV |
217 |
| -10 |
70.7mV |
218 |
| 0 |
224mV |
219 |
| +10 |
707mV |
219 |
|
AR8200 Series-1 (green cabinet) - late production
| Signal meter |
input signal
dBm |
equivalent signal
in uV |
| ½ block |
-105 |
1.26 |
| 1 block |
-102 |
1.78 |
| 1½ block |
-99 |
2.52 |
| 2 block |
-97 |
3.17 |
| 2½ block |
-94 |
4.48 |
| 3 block |
-93 |
5.03 |
| 3½ block |
-91 |
6.33 |
| 4 block |
-88 |
8.94 |
| 4½ block |
-86 |
11.30 |
| 5 block |
-84 |
14.20 |
| 5½ block |
-81 |
20.00 |
| 6 block |
-78 |
28.30 |
| 6½ block |
-74 |
44.80 |
| 7 block |
-66 |
113.00 |
|
input signal
dBm |
equivalent signal
in uV |
LM response |
| -120 |
0.22 |
113 |
| -115 |
0.40 |
113 |
| -110 |
0.71 |
113 |
| -105 |
1.26 |
121 |
| -100 |
2.24 |
138 |
| -95 |
3.98 |
151 |
| -90 |
7.07 |
164 |
| -80 |
22.40 |
184 |
| -70 |
70.70 |
197 |
| -60 |
224.0 |
206 |
| -50 |
707.0 |
212 |
| -40 |
2.24mV (2240.0) |
215 |
| -30 |
7.07mV |
218 |
| -20 |
22.4mV |
220 |
| -10 |
70.7mV |
221 |
| 0 |
224mV |
224 |
| +10 |
707mV |
230 |
|
AR8200 Series-2 (black cabinet)
| Signal meter |
input signal
dBm |
equivalent signal
in uV |
| ½ block |
-111 |
0.63 |
| 1 block |
-109 |
0.79 |
| 1½ block |
-108 |
0.89 |
| 2 block |
-107 |
1.00 |
| 2½ block |
-104 |
1.41 |
| 3 block |
-103 |
1.58 |
| 3½ block |
-101 |
1.99 |
| 4 block |
-100 |
2.24 |
| 4½ block |
-98 |
2.81 |
| 5 block |
-96 |
3.54 |
| 5½ block |
-94 |
4.46 |
| 6 block |
-92 |
5.61 |
| 6½ block |
-90 |
7.07 |
| 7 block |
-88 |
8.90 |
|
input signal
dBm |
equivalent signal
in uV |
LM response |
| -120 |
0.22 |
000 |
| -115 |
0.40 |
000 |
| -110 |
0.71 |
010 |
| -105 |
1.26 |
027 |
| -100 |
2.24 |
042 |
| -95 |
3.98 |
055 |
| -90 |
7.07 |
068 |
| -80 |
22.40 |
086 |
| -70 |
70.70 |
097 |
| -60 |
224.0 |
103 |
| -50 |
707.0 |
106 |
| -40 |
2.24mV (2240.0) |
109 |
| -30 |
7.07mV |
112 |
| -20 |
22.4mV |
139 |
| -10 |
70.7mV |
139 |
| 0 |
224mV |
139 |
| +10 |
707mV |
139 |
|
The AGC voltage is available from the side AUX option socket of the AR8200.
The typical swing of AGC voltage is as follows:
| No signal |
8mV |
| Minimal detected signal for AGC action, -114dBm |
13mV |
| AGC full on (saturates) above, -24dBm |
2.58V |
***