Although when using our travel trailer, I operate the radio from the 12V
battery system, I do have installed a 12 volt to 120 volt pure sine
wave inverter. This takes care of things such as computer, microwave,
TV's and of course the all required "hair dryer" and etc. The unit is
rated at 2KW. I've located it very near the battery using #4AWG copper
for battery connections. I've made provisions to switch the entire
trailer over between "external" power and "internal" power. We often
camp where there is no electric service and may not be able to run the
generator due to "quiet hours". Overall the unit works well, seems to
be about 85% efficient based on load, and is reasonably RF noise
free. As to 120 VAC provided in vehicles........I don't have any
history or knowledge.
73
Bob, K4TAX
On 10/9/2017 12:48 AM, Erik Basilier wrote:
The 117V AC may be produced by the vehicle using an inverter similar to those
sold as separate devices. Years ago I was using one of those and found out that
they would not allow the ground pin on the AC outlet to be connected to the 12V
minus connection. If that is the case, you would have to be careful hooking
things up.
73,
Erik K7TV
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Dauer, Edward
Sent: Sunday, October 08, 2017 8:19 PM
To: [email protected]
Subject: [Elecraft] Mobile from 117 VAC
Previous threads provided a great deal of info about arranging automobile
electrical systems to power HF rigs. But as I recall, it all focused on using
the battery / alternator supply for the 13 VDC. Though I wanted to go mobile
and still do, for a number of reasons I could not configure my car to do it
properly. I am now thinking of buying a new SUV which has 117 VAC outlets in
its rear cargo space. That makes me wonder – could I just use an ordinary 117
VAC to 13 VDC power supply, exactly as I do at home, just plug it in and –
staying within the car’s rated current draw – operate without worrying about
where the ground goes vis-à-vis the battery, what-all needs to be bonded with
what-all-else, how everything needs to be mummified in ferrite, etc? Or are
the problems all the same even though different? My objective is simple. I
want to be able to drive to a rare county, set up my buddipole in a parking
lot, and use either a XX3/KXPA or a K2/100 to knock out some CW QSOs. I do NOT
want to take an electric drill or a rivet gun to a new car.
Has anyone gone mobile using a car’s 117 VAC outlets? Any thoughts to share?
Any thoughts from anyone who for any reason hasn’t done it?
Ted, KN1CBR (operating this week as N0A in the NAQCC anniversary event. Give
a call if you hear me. Mostly 20 or 40 CW)
Tnx.
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