The maximum cable length that can be utilised by a GPS ntp time server antenna is dependant on the gain of the antenna and the quality of the coax cable utilised. TimeTools provides two types of antenna, a patch type GPS antenna and a pole-mounting type GPS antenna.
TimeTools NTP s5100 pole-mounting antenna has a higher gain than the patch type antenna, so can utilise a longer cable length. The gain of the pole-mounting antenna is 35dB, while the gain of the patch type antenna is 27dB.
The maximum cable distance for the patch type antenna are as follows:
| Coax Cable Type |
Maximum Cable Distance that can be utilised |
| Standard RG58 Coax |
20m (25m overall) |
| TimeTools Low-Loss Coax |
25m (30m) overall |
The maximum cable distance for the pole-mounting antenna are as follows:
| Cable Type |
Maximum Cable Distance that can be utilised |
| Standard RG58 Coax |
30m |
| TimeTools Low-Loss Coax |
50m |
| TimeTools Ultra-Low Loss Coax |
100m |
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