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An interesting source of free wire for ground radials

A little while ago I posted an article on The how big, how long and how many of ground radials.
     While grounding for low power AM is an oft-debated issue, one thing we all agree on is that burying copper is a pretty expensive activity.
     Imagine my surprise when I discovered a limitless supply of free copper, just waiting to be dutifully buried!
     My new treasure trove might just be available in your town, too.
     What is the secret to unlimited free copper for ground radials? It's our local cable TV franchise, or more correctly, the dumpster behind our local cable TV franchise office.
     My current QTH is a small town of about 30,000 and we have a local cable brand here with a retail office and an installer shop.
     It turns out that when you buy cable in the quantities that a cable TV company buys cable, the cost of the labor to troubleshoot cable is far, far higher than the cost of replacing cable.
     Consequently, the current practice is to rip out and replace any run that might be even slightly questionable.
     What do they do with the old cable? Labor costs, again - the least expensive solution is to pitch it in the dumpster.
     Because our cable TV provider also offers VOIP, here's lots of old multi-conductor telephone cable in the dumpster, too!
     All this to say that the discarded old coax is a bonanza for those of us who wish to bury it. Using the shield as the primary conductor and laying out as many feet as you want to carry home is sure to help your signal, so give it a try.
     The usual provisos apply here - no B&E, trespassing or other skulduggery, I just walked up to the dumpster in the alley and grabbed all I wanted.
     Wait until after hours (to wait until after the installers have cleaned out their trucks) and then check your local cable installer or franchise dumpster - the cash you save might be your own!

Low power AM circuits of James R Cunningham

100 milliWatt AM Transmitter Schematic
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10 Watt AM Transmitter Schematic
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3-12 Watt AM Tube Transmitter Schematic
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James Cunningham regularly published booklets of radio instructions, schematics and station plans, intended to help missionaries set up gospel radio stations.
     Titles included Low Power Radio Broadcasting and The Big Antenna Book
     At one point in time, James also manufactured and sold transmitters, carrier current load tuners and other assorted sundry hardware items.
     One surviving document tells the story of the Cunningham Transmitters Model CM 30 - 50, an AM transmitter manufactured for export.
     The low power AM transmitter schematics to the right all come from Low Power Radio Broadcasting, Missionary Edition.
     James passed away in 2005, as announced on his gospel radio MSN group, shown here in the Internet Archive.
     Many of the left menu links still connect to archived copies of other projects and information. For example the two-part series titled "Solving broadcast problems" discusses how to deal with the kinds of RF / audio chain problems common to low power broadcasting efforts.
    You'll find lots of interesting articles and comment on topics like carrier current, antenna tuning and general low power radio information.

Get on the Air with One Click, Buy a Transmitter Bundle from Amazon.com

Many hobbyists agree that the F-S variable power 0.1 to 0.5 W FM Transmitter is one of the best transmitters for the price.  Add the convenience of a selection of premium quality accessories and you can literally be on the air with a single click.
     No need to search the web for FM broadcast antenna, FM transmitter antenna plans or FM broadcast antenna diy, this great combo includes an F-S Electronics RangeBooster 2.0 Ground Plane Antenna. 
     Connect your antenna to the transmitter with your included ultra low-loss  (55.4 db/100m), 8 mm diameter,  rugged class 8D broadcasting cable and add your programming with the included 6 foot heavy duty stereo audio cable. 
     Necessary adapters are included, too - a simple and cost-effective solution to increase your range, minimize signal loss and maximize your broadcasting enjoyment.
     Peace of mind with the lifetime warranty.

Check out these reviews from real users:

• "All components of the bundle are high quality."

• "The Rangebooster antenna definitely extends the range"

• "Signal goes through brick-metal buildings and embankments as if they were not there"

• "The transmitter unit defaults to .1 watts which is how I've been using it."

• "I am able to get more range with the external antenna"

• "Set up was so easy. The sound quality was awesome. I love this transmitter!"

• "The transmitter works well given I am out in the 'bush' away from town"

• "Worked great right out of the box. Very pleased!!"

• "It is a very compact and easy to use transmitter with impressive stereo fidelity"


So quit wishing and waiting, quit struggling with inferior approaches and “Git er dun!”
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Power Blaster Bundle Deal #4: Fail-Safe RangeStud 15 WATT FM Transmitter + RangeMax Professional Grade Antenna ($400 value!), now only $345.95!

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