2015 Radio Checkup Clinic
The NSARC meeting held on April 16, 2015 provided the opportunity to do
basic testing of members’ radios using a HP8921A Communications Service Monitor.
There was an enthusiastic response from the members in bringing in equipment for
test. Our members Alex VE7DXW and Adam VA7OJ ran the radio testing session.
HP 8921A Communications Service Monitor
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The summary test results are given in Tables 1 and 2 below for those who missed the meeting. These
should not be regarded as definitive due to the informal nature of the tests.
Table 1: VHF/UHF Radios
| Radio |
Frequency |
Carrier Freq. Error |
Po (Nominal) |
Deviation |
Sensitivity1 |
| MHz |
Hz |
W |
kHz |
μV |
| Yaesu VX-7R |
144 |
+218 |
3.0 |
4.0 |
0.16 |
| Yaesu VX-5R |
144 |
-150 |
3.1 |
≈ 5 |
0.16 |
| Yaesu FT-1D |
144 |
-5 |
2.5 |
5.4 |
0.22 |
| 440 |
-80 |
2.6 |
5.2 |
0.2 |
| Alinco DJ-596 |
144 |
-130 |
1.5 |
6.04 |
1.64 |
| Alinco DJ-6 |
144 |
-200 |
1.7 |
4.8 |
0.2 |
| Alinco DJ-V27 |
220 |
+25 |
0.53 |
5.74 |
0.11 |
| Kenwood TH-6 |
146 |
-35 |
2.4 |
4.9 |
0.182 |
| 440 |
-80 |
2.7 |
4.8 |
0.182 |
| Icom IC-T70A |
146 |
+3 |
3.3 |
4.7 |
0.14 |
| 440 |
-10 |
2.6 |
4.8 |
0.16 |
| Icom IC-T7H |
146 |
-200 |
2.5 |
5.0 |
0.14 |
| 440 |
-700 |
2.3 |
5.74 |
0.18 |
| Icom IC-706IIG #1 |
146 |
-400 |
41 (50
nom) |
6.54 |
0.28/0.165 |
| 440 |
-1.5k4 |
19 (35
nom) |
6.54 |
0.32/0.165 |
| Icom IC-706IIG #2 |
146 |
-100 |
46 (50
nom) |
6.64 |
0.25/0.145 |
| 440 |
-500 |
19 (35
nom) |
6.64 |
0.28/0.165 |
Notes:
- 12 dB SINAD except where noted.
- 20 dB quieting.
- LOW setting only (weak battery did not allow HIGH).
- Out of spec.
- Preamp on.
Table 2: HF Radios
| Radio |
Frequency |
Carrier
Freq. Error |
Po
(Nominal) |
Sensitivity1 |
| MHz |
Hz |
W |
μV |
| Icom IC-706IIG #1 |
14.1 |
-1k2 |
105 (100
nom) |
702 |
| Icom IC-706IIG #2 |
14.1 |
-23 |
105 (100
nom) |
0.5/0.253 |
| Icom
IC-735 |
14.1 |
-11 |
125 max |
0.35/0.33 |
Notes:
- 12 dB SINAD.
- Out of spec.
- Preamp on.
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This page last updated: 2015-04-17
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