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I also think that the connector loss is high: It should be around –0.1 dB, but I’ll concede to make it –0.2 dB to be conservative. The same for the Low Pass filter and the switches: They should also be about –0.1 each, but again I’ll be conservative and use –0.2 dB for each.

The antenna is another thing too. You’re quoting the Solarcon A99 at +1.8 dBi, that’s equal to –0.35 dBd, (1.8 dBi – (+2.15 dBi)). Remember 2.15 dBi = 0 dBd.

Thus for system 1:

50 Watts =    46.9897 dBm
LP Filter = -0.2000 dB
10 Connectors = -2.0 dB
1 Coax Switch = -0.2 dB
1 Wattmeter =    -0.2 dB
75 ft RG-8/X =    -1.875 dB
Solarcon A99 = -0.35 dBd

For this setup: Total Gains = 46.9897 dB
   Total Loss = -4.8250 dB

ERP = 42.1647 dBm = 16.4615 Watts

Whereas:
EiRP = 42.1647 dBm + 2.15 dBi = 44.3147 dBi = 27.0066 Watts
-------------------------------------------------------------

For system 2:

50 Watts =    46.9897 dBm
LP Filter = -0.0000 dB
6 Connectors =   -1.20 dB
1 Coax Switch = -0.2 dB
1 Wattmeter = -0.2 dB
100 ft LMR400 = -0.7 dB
Solarcon A99 =   -0.35 dBd

For this setup: Total Gains = 46.9897 dB
   Total Loss = -2.65 dB

ERP = 44.3397 dBm = 27.1625 Watt

Whereas:
EiRP = 44.3397 + 2.15 dBi = 46.4897 dBi = 44.5625 Watts

73,
Mike

<blockquote data-quote="KC9Q" data-source="post: 352163" data-attributes="member: 23691">I also think that the connector loss is high: It should be around –0.1 dB, but I’ll concede to make it –0.2 dB to be conservative.&nbsp; The same for the Low Pass filter and the switches: They should also be about –0.1 each, but again I’ll be conservative and use –0.2 dB for each. The antenna is another thing too.&nbsp; You’re quoting the Solarcon A99 at +1.8 dBi, that’s equal to –0.35 dBd, (1.8 dBi – (+2.15 dBi)).&nbsp; Remember 2.15 dBi = 0 dBd.Thus for system 1:50 Watts =&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 46.9897 dBmLP Filter =&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; -0.2000 dB10 Connectors =&nbsp; -2.0 dB1 Coax Switch =&nbsp; -0.2 dB1 Wattmeter =&nbsp; &nbsp;&nbsp; -0.2 dB75 ft RG-8/X =&nbsp; &nbsp;&nbsp; -1.875 dBSolarcon A99 =&nbsp; &nbsp; -0.35 dBdFor this setup:&nbsp; Total Gains = 46.9897 dB&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; Total Loss = -4.8250 dBERP = 42.1647 dBm = 16.4615 WattsWhereas:EiRP = 42.1647 dBm + 2.15 dBi = 44.3147 dBi = 27.0066 Watts-------------------------------------------------------------For system 2:50 Watts =&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 46.9897 dBmLP Filter =&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; -0.0000 dB6 Connectors =&nbsp;&nbsp; -1.20 dB1 Coax Switch =&nbsp; -0.2 dB1 Wattmeter =&nbsp; &nbsp; -0.2 dB100 ft LMR400 =&nbsp; -0.7 dBSolarcon A99 =&nbsp;&nbsp; -0.35 dBdFor this setup:&nbsp; Total Gains = 46.9897 dB&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; Total Loss = -2.65 dBERP = 44.3397 dBm = 27.1625 WattWhereas:EiRP = 44.3397 + 2.15 dBi = 46.4897 dBi = 44.5625 Watts73,Mike</blockquote>

[QUOTE="KC9Q, post: 352163, member: 23691"] I also think that the connector loss is high: It should be around –0.1 dB, but I’ll concede to make it –0.2 dB to be conservative. The same for the Low Pass filter and the switches: They should also be about –0.1 each, but again I’ll be conservative and use –0.2 dB for each. The antenna is another thing too. You’re quoting the Solarcon A99 at +1.8 dBi, that’s equal to –0.35 dBd, (1.8 dBi – (+2.15 dBi)). Remember 2.15 dBi = 0 dBd. Thus for system 1: 50 Watts = 46.9897 dBm LP Filter = -0.2000 dB 10 Connectors = -2.0 dB 1 Coax Switch = -0.2 dB 1 Wattmeter = -0.2 dB 75 ft RG-8/X = -1.875 dB Solarcon A99 = -0.35 dBd For this setup: Total Gains = 46.9897 dB Total Loss = -4.8250 dB ERP = 42.1647 dBm = 16.4615 Watts Whereas: EiRP = 42.1647 dBm + 2.15 dBi = 44.3147 dBi = 27.0066 Watts ------------------------------------------------------------- For system 2: 50 Watts = 46.9897 dBm LP Filter = -0.0000 dB 6 Connectors = -1.20 dB 1 Coax Switch = -0.2 dB 1 Wattmeter = -0.2 dB 100 ft LMR400 = -0.7 dB Solarcon A99 = -0.35 dBd For this setup: Total Gains = 46.9897 dB Total Loss = -2.65 dB ERP = 44.3397 dBm = 27.1625 Watt Whereas: EiRP = 44.3397 + 2.15 dBi = 46.4897 dBi = 44.5625 Watts 73, Mike [/QUOTE]

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