Both maximum transmission distance and coverage depend on the magnetic field pattern for Wi-Fi signal of an antenna.
Omni-directional antennas are used when the coverage required is in all directions around the horizontal axis of the antenna. Omni-directional antennas are most effective where large coverage areas are needed around a centre point. For example, placing an omni-directional antenna in the middle of a large, open room would provide a good coverage. Omni-directional antennas are commonly used for point-to-multipoint designs with a star topology.
Semi-directional antennas are ideally suited for short and medium range bridging. For example, two office buildings that are across the street from one another and need to share a network connection would be a good scenario in which to implement semi-directional antennas. In a large indoor space, if the transmitter must be located in a corner or at the end of a building, a corridor, or a large room, a semi-directional antenna would be a good choice to provide the proper coverage.High-gain antennas do not have a coverage area that client devices can use. These antennas are used for point-to-point communication links, and can transmit at distances up to 20 Km. Potential uses of highly directional antennas might be to connect two buildings that are miles away from each other and have no line of sight obstructions between them.

Theoretically, there is no limit on the maximum number of user that can access AP. However, the maximum data transmission rate available is 54Mbps according to IEEE 802.11a/g. The more users connected to the AP, the smaller bandwidth each user can have.
We have tested our AP with 20 users per interface (one interface for 500AG and 2 interfaces for 600AG), and have data rate around 2Mbps.

There are a few possible causes for this lost ping problem:
1.Do make sure there is no duplicate IP address in the system. When there is another device using the same IP as the AP, then the system cannot decide which one to ping and result in lost ping.

Aphelion AP operating in 802.11a mode has maximum transmission power of 17dBm and in 802.11b/g has maximum transmission power of 18dBm.
We also have Aphelion high power series AP available soon. This high power series AP offers 20dBm in 802.11a mode and 24dBm in 802.11b/g mode. Please refer to product specifications for more detail.

Aphelion outdoor AP has waterproof housing with highest sealing protection IP68 certified. As long as the connectors of power cord and antenna RF cable are properly installed with self-bonding insulating tape wrapped. AP can operate normally even in extreme weather.
The environmental specification of Aphelion AP is
Operation temperature :
-30^oC ~ 60^oC,
-40^oC ~ 60^oC with heating element installed (optional)
Storage : 40^oC ~ 80^oC.

The advantage of Aphelion CW600AG is that you can deploy the CW600AG directly on an existed cable plant without extra power resource. Power and data will go directly from the cable plant to CW600AG. With the daisy chain technology, you can extend your Wi-Fi signal to the area where cable plant cannot reach.

Usually, the cable modem is unnecessary to be configured but CMTS. CW600AG supports full functions configured from telnet and secure SSH telnet.

The WICA series is only available for 2.4GHz (802.11b/g) Wi-Fi signal nowadays. Standard 5C 75Ω coaxial cable is required in deployment. Good shielding will be a plus for a better Wi-Fi signal quality on coaxial cable.

The distance how will the Wi-Fi signal been carried by WICA units and coaxial cable combination can be pre-calculate by the formula below.
The maximum length of a coaxial cable depends on the total insertion loss in a link. Insertion loss of WICA units and coaxial cable can be pre-calculated by the formula:

Output Power of AP - Insertion loss of WICA units - Coaxial cable loss = Total insertion loss

The result total insertion loss of better than -39dBm provides a promising connection for WICA deployment. Here is an example of Wi-Fi signal pre-calculation in a WICA deployment

Case 1.



An AP with 15dBm output power is deployed as a source for Wi-Fi signal on WICA combination. The connection chain will be AP – WICA10 – WICA11 – 15m long coaxial cable – WICA12 – 15m long coaxial cable – WICA12
The total insertion loss from the first WICA12 is -6.5 dBm

15 (AP output power) - 1.5 (WICA10 insertion loss) - 5 (WICA11 insertion loss) - 15×0.6 (15m long coaxial cable insertion loss) - 6 (WICA12 insertion loss) = -6.5

The total insertion loss from the second WICA12 is -21.5 dBm

15 (AP output power) - 1.5 (WICA10 insertion loss) - 5 (WICA11 insertion loss) - 15×0.6 (15m long coaxial cable insertion loss) - 6 (WICA12 insertion loss) - 15×0.6 (15m long coaxial cable insertion loss) - 6 (WICA12 insertion loss) = -21.5

Wi-Fi signal outputted from both WICA12 are better than -39dBm, we will say the Wi-Fi signal from both WICA12 are connection available.

Case 2.



The total insertion loss from the first WICA12 is -21.5 dBm

15 (AP output power) - 1.5 (WICA10 insertion loss) - 5 (WICA11 insertion loss) - 40×0.6 (40m long coaxial cable insertion loss) - 6 (WICA12 insertion loss) = -21.5

The total insertion loss from the second WICA12 is -51.5 dBm

15 (AP output power) - 1.5 (WICA10 insertion loss) - 5 (WICA11 insertion loss) - 40×0.6 (40m long coaxial cable insertion loss) - 6 (WICA12 insertion loss) - 40×0.6 (40m long coaxial cable insertion loss) - 6 (WICA12 insertion loss) = -51.5

Wi-Fi signal outputted from the first WICA12 is -21.5dBm so the Wi-Fi signal from the first WICA12 is connection available.
Wi-Fi signal outputted from the second WICA12 is -51.5dBm. This is lower than -39dBm so the Wi-Fi signal from 2nd WICA12 is unavailable.

Could I use an amplifier to increase the reaching distance of Wi-Fi signal?