Standby Power for the Shack?

I’m approaching the standby power issue considering three states of power:

  • (A) Fully on Mains Power (normal condition)
  • (B) Temporary Interruption of Mains Power of less than a day in length
  • (C) Extended Interruption of Mains Power

I’m building my condition matrix with three usage profiles:

  • (1) Casual and Standby condition, minor interruptions okay
  • (2) Ready for Hobby Radio Work
  • (3) Ready for Serious Radio Work, including Freecom

The matrix looks like this:

So the resulting conditions from the matrix are:

  • (A) Fully on Mains Power (normal condition) while in (1) Casual and Standby condition, minor interruptions okay mode
  • (A) Fully on Mains Power (normal condition) while in (2) Ready for Hobby Radio Work mode
  • (A) Fully on Mains Power (normal condition) while in (3) Ready for Serious Radio Work, including Freecom mode
  • (B) Temporary Interruption of Mains Power of less than a day in length while in (1) Casual and Standby condition, minor interruptions okay mode
  • (B) Temporary Interruption of Mains Power of less than a day in length while in (2) Ready for Hobby Radio Work mode
  • (B) Temporary Interruption of Mains Power of less than a day in length while in (3) Ready for Serious Radio Work, including Freecom mode
  • (C) Extended Interruption of Mains Power while in (1) Casual and Standby condition, minor interruptions okay mode
  • (C) Extended Interruption of Mains Power while in (2) Ready for Hobby Radio Work mode
  • (C) Extended Interruption of Mains Power while in (3) Ready for Serious Radio Work, including Freecom mode

Available tools include:

  • Mains Power
  • Partial Standby Power (present Onan Genset)
  • Planned Full Site Standby Power (newer Kohler Genset)
  • Ham Shack only limited shack components emergency power (present Honda Gensets)
  • Planned Ham Shack full emergency power (relocated Onan Genset)
  • Planned Ham Shack “Battery Bank DC Power” setup, which can provide some backup

Absolutes required for Ham Shack backup, radios and all other systems down, is actually zero power.  The furnace uses a self-powered thermostat where a thermocouple in the furnace generates enough power to keep it running in “gravity mode.”  I need to confirm if the fan is powered from the same internal source or not. (It appears it is).

Minimal Operating Situation would require transceiver power and enough LAN/remote switch power to get an antenna hooked to the transceiver, or the equivalent in manual jumpering past the switches.

Optimal Operating Situation would require all station components to have power, including the amplifier in use.

The use of Batteries might offer benefits beyond just helping out in a power outage.  Best practices in station design regularly use batteries as a way to decouple radios and equipment from the noise present in Mains Power and from Gensets.

Through actual testing I’ll need to confirm what parts have to be powered on for the station to work.

I know that Jumpering past energy hogs during power out periods can help meet some of the conditions.

Batteries and photovoltaics take space and quickly get pricey.  I’d looked at the Tesla-Wall at one point, but lack of long term test results and the difficulties getting a good grasp with Tesla on what is wishes and what is deliverables.  There is a cost issue as well.

I’ll be returning to this topic once I have cataloged all the loads, categorized if under which condition they need to have power, and flesh out the reserve time needed issues.

73

Steve
K9ZW

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