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RE: Small Site Solar Equipment Advice Needed
To: "'CRTech'" <crtech@crtech.org>
Subject: RE: Small Site Solar Equipment Advice Needed
From: "Bill Hurne" <billhurne@pilgrimradio.com>
Date: Mon, 23 Jul 2018 09:49:41 -0700
Content-language: en-us
In-reply-to: <CAPQBvqpFsdDcfTUry4LMgQ2jjwngPi6Nt9AQmDmsH8QKke4VpA@mail.gmail.com>
References: <CAPQBvqpFsdDcfTUry4LMgQ2jjwngPi6Nt9AQmDmsH8QKke4VpA@mail.gmail.com>
Thread-index: AQGZLEFssds0rONjRpOaI3YvwwVHcaUS60FQ

We have installed solar power for low power FM translators, but have gotten away from it because it turned out to be much more maintenance than anticipated.   For a 20 watt TPO translator, we used a bank of ten, six-volt golf cart type batteries in order to have enough capacity to operate continuously through cloudy and snowy weather.   These cannot be mounted in a small cabinet attached to a pole.   Batteries were charged by a pair of solar panels which were 4 by 2 feet which had to be mounted very securely.   They were blown over multiple times by strong mountain top wind storms.




From: Mark Croom [mailto:markc@newmail.kinshipradio.org]
Sent: Sunday, July 22, 2018 7:35 PM
To: CRTech
Subject: [CRTech] Small Site Solar Equipment Advice Needed


Hi All,

I have a situation where I might need to power a Ubiquiti hop site with some type of solar/battery/inverter setup.

It's just two PoE radios, rated at 5.5W power consumption each (120V into PoE adapter).

I'm looking for something I can attach to the wood pole that supports the antennas, that is, to fit in a small cabinet that will attach to the pole. I'm OK with assembling this from parts rather than some kind of turn-key kit but the simplicity of a kit would be great because I'll be doing this as part of a big project and there's a lot on the plate while the project is in process.

I'd be interested in hearing from folks who might have done something like this -- it's much lower power requirement than a solar powered transmitter or translator site but it needs to be reliable (STL). I envision a deep cycle battery connected to the charger/inverter, or other battery technology that makes sense.

The panel would have a nice south exposure maybe fifteen feet up the pole, but the cabinet would be sheltered much of the day as it would go below the roof level of a very nearby adjacent building. That means not much roasting in the summer but we do get to -25F in the winter so if anybody has some real-world experience with battery technology for this I'd be grateful for the input.

Trenching power to this location would be very costly so I think doing our own solar might just be a great self-contained alternative.

Thanks for any real-world experience you can share.



Mark W. Croom

Riverfront Communications, LLC

Yankton, SD

Follow-Ups: RE: Small Site Solar Equipment Advice Needed
("Bill Hurne" <billhurne@pilgrimradio.com>, 23 Jul 2018 17:55:33 -0000)
References: Small Site Solar Equipment Advice Needed
(Mark Croom <markc@newmail.kinshipradio.org>, 23 Jul 2018 02:35:25 -0000)
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