HF in an RV, power?

Discussion in 'Mobile Radio Systems' started by KE8OF, Aug 8, 2018.

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  1. KE8OF

    KE8OF Ham Member QRZ Page

    I'm looking to run my TS480SAT in my class c motorhome and want advice on rather to run thru a power supply or go directly to the battery either home or vehicle.
  2. AG6QR

    AG6QR Subscriber QRZ Page

    When you operate, do you always have AC power available?

    If not, I'd run off the house battery. The truck battery is designed for starting, and its life will be shortened by deep cycling. Plus, you always want to save it so that it can start the engine no matter how much operating you did while camped.

    Side note: many AC to DC converters in RVs are very noisy at RF. Even when you have AC available, you may want to disconnect it while operating. Do your own evaluation when you have things ready.
    KU3X likes this.
  3. K0BG

    K0BG Platinum Subscriber Platinum Subscriber QRZ Page

    Richard is correct. In fact, inverter/chargers are the worse offenders RFI-wise. And hopefully you don't have a Xantrax?
  4. K6CLS

    K6CLS Ham Member QRZ Page

    You may have other reasons for 120v AC. Handy to have available.

    Consider running your TS480 on a "buck booster", which takes 12.x volts from your battery and makes 13.8 volts. The rig will be a lot happier.

    And, run a separate battery for the rig. Save the motor starting battery.
  5. KD4UPL

    KD4UPL Ham Member QRZ Page

    I'd wire the rig to the house battery. If your cheap factory RV battery charger makes RFI then replace it with one that doesn't. There's no need to carry around a power supply.
    Most RV battery chargers are cheap, basic, and don't take great care of your batteries. They are designed to keep a light charge on the battery all the time while plugged in; this is how most people "camp" most of the time. If you intend to have a good multi-stage charger to really charge your depleted batteries well you likely should upgrade what's in the RV. I don't know about the RFI characteristics but IOTA chargers are excellent from a quality standpoint. The IQ4 add-on board gives them excellent multi-stage charging ability.
  6. KG5UMH

    KG5UMH Ham Member QRZ Page

    I am going to go straight to the House batteries on mine. I have a multi stage charger on the FSW Inverter that will keep them charged while I have the AC connected. Will carry the power supply "just in case."
  7. WB2WIK

    WB2WIK Premium Subscriber QRZ Page

    Are you going to operate from the motor home while "in motion" or only when parked?

    If parked without hookups, power supply and onboard generator. If camped with hookups, shore power!

    I can think of lots of reasons to not run that rig on battery power unless the engine's running to charge it at the same time.
    K5RCD likes this.

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