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− | '''Apollo''' is to be a companion 15W PA and Low Pass Filter for [[HERMES|Hermes]]. The idea is to build a self contained HPSDR Transceiver into a box similar to the one used for the two [[ALEXIARES|Alex]] boards.
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− | The box, made by Hammond has a sliding cower on one of the sides (Series 1455, PN 1455N1601). This cower can be used as Front Panel and behind this a display up to 4 inches may be installed. There will also be space for a controller (Beagleboard or something else). One of the goals is a small platform to use as controllers for a self contained transceiver.
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− | Another goal is current consumption of less than 0,3- 0,4 A but this seems to be difficult with the existing units ([[OZY|Ozy]], [[MERCURY|Mercury]] and PC/ controller). If we can manage to get all into this box and working with suitable software, we can modify the hardware and use less power hungry components for a 2.nd generation transceiver.
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− | Useing latched relays for filter switching will save power. This will require modified software but should not be difficult. The interface
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− | to Hermes will be I2C.
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− | The LP Filters will be based on Alex but with only one Antenna connector. The toroides may be smaller (T38 instead of T50). Also the capacitors can
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− | have lower voltage ratings. An Antenna Tuner can also sit in on the same board. (LDG makes good tuners so it may be possible to use one from them)
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