The Onan RS-15000 Generator

It is a cute little thing. This one is being installed at a mountain top transmitter site for a class A WKIP-FM in Ellenville, NY.  It is way up in the air (at least by local standards) at 2,450 feet AMSL.  As such, the TPO is only 300 watts into a one bay antenna.  Therefore, even this little generator will be loafing along.  I added all the rack equipment up, both transmitters (main and backup), and the electric resistance heater and came up with a grand total of 6,300 watts.  The working load today was 3,200 watts, which I would assume is about average.

Onan RS-15000 at transmitter site with ice shield
Onan RS-15000 at transmitter site with ice shield

Denis, my sometimes helper, build an ice shield over the top of the unit with pressure treated wood.  This unit was placed about 40 feet away from the 140 foot tower, next to the concrete block building.  Still, on a windy day, I could see some chunks of ice flying off the tower in this direction.

It has a Lister/Petter 1900 cc engine, 1800 RPM, 240 volt split phase generator.  At 25% load, it burns 1.2 gallons of propane per hour.

Onan RS-15000 gaseous generator
Onan RS-15000 gaseous generator

This is annoying. The gas installer blocked access to one of the through holes in the bottom of the enclosure frame. Actually, more than annoying, downright annoying as it blocked the exact center of the hole.  I had to move the regulator up about two inches so I could run the 1 inch flex under the gas line.  This, in turn, led to some amount of swearing.

Gas supply to generator installed by selfish gas man
Gas supply to generator installed by selfish gas man or woman

Other side of the engine:

Lister petter 4 cylinder 1900 cc engine
Lister Petter 4 cylinder 1900 cc engine

Push rods going to rocker arms over the cylinders.  Low tech, under head cam engine. That’s okay, so long as it works when it is supposed to.

Onan RS-15000 generator wired to transmitter building
Onan RS-15000 generator wired to transmitter building

PVC conduit running into the transfer switch.  The final connection is made with liquid tight flexible metal conduit (FMC).  The control wiring is run in a separate 1/2 inch conduit, as required by NEC.

Engineering Radio is Two Years Old

Happy birthday to us! I was looking through the past posts of this blog and found much of it still relevant today. There were some older video posts where the videos are no longer available on youtube, those were deleted.

I continue to look for subjects to blog about while keeping the subject matter pertinent to broadcast engineering or some aspect of radio in general.  With so many things going on, this can be hard to do.

Here are a few stats:

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Which brings me to this; I use an aggressive $pam filter.  There is no way that I would be able to keep up with the number of junk comments received otherwise.  If you have posted a legitimate comment and it doesn’t show up after a period of time, e-mail me and I’ll look into it.  Chances are very good that some legitimate comments have been deleted by the $pam filter, for which I apologize.

Many of my unique visitors come from Google searches which is strange considering it’s page rank is 0/10.

I continue to enjoy blogging about the everyday life of a broadcast engineer and thank all of my readers and subscribers for their interest.  It is entertaining and enlightening to read all of your comments and e-mails.  For as long as there is interest, the writing project will proceed.