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radio [2026/05/17 23:05] – [RF Slipring] dsheenradio [2026/05/18 01:28] (current) – [Radome] dsheen
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 * Amateur radio (half-duplex on 440 MHz, 1296 MHz, and others) * Amateur radio (half-duplex on 440 MHz, 1296 MHz, and others)
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 ===== Feeds ===== ===== Feeds =====
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 Note that the center channel (DC to 40GHz) is reserved pending the installation of appropriate switches and filter tees. However, it will likely become the default path for all half-duplex systems in order to minimize switching/routing requirements. All channels except the center channel use SMA connectors. The center channel uses SSMA ("small" SMA). These are not mechanically compatible with any other connector type and require adapters to use. Note that the center channel (DC to 40GHz) is reserved pending the installation of appropriate switches and filter tees. However, it will likely become the default path for all half-duplex systems in order to minimize switching/routing requirements. All channels except the center channel use SMA connectors. The center channel uses SSMA ("small" SMA). These are not mechanically compatible with any other connector type and require adapters to use.
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 +===== Radome =====
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 +The radome itself is not perfectly transparent at all frequencies. Its estimated transmission loss is given by the plot below, but the exact performance depends on the exact parameters of the telescope beam and the concentration of energy at different angles of incidence on the radome panels.
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 +{{ ::radome_transmission_loss.png?direct&600 |}}
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 +{{ ::radome_loss_table.png?direct&800 |}}
radio.1779059120.txt.gz · Last modified: 2026/05/17 23:05 by dsheen

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