FM Transmitter Circuit BBG - Different Configurations
BBG FM (NBFM
) VHF Transmitter - Crystal Controlled
Configurations For The BBG
One Of The
Greatest Things About Building And Selling Restricted Equipment Similar To The
is that when you sit in front of someone displaying your samples, is that each and everyone
you meet requires something different - off the books and catered to their very own needs.
You can throw a fully functional BBG on their desk ( Or Any Other Product Sample ), turn on
the receiver and demo how it works and right away - I Like it, but can you supply it to me
in this configuration or in another style or in a smaller size or on this frequency and on
and on. On the average, the BBG in it's current configuration as a body wire ( As You See
In It's Photos ) were only 30% of it's sales. The rest of the time the board was modified,
and re-packaged to meet the customers needs.
I Always Got The
Sale. Why? Based On Years Of Experience,Of What These Agencies Actually Wanted Rather Than
What Was Out There In The Form Of A Stock Product, I Did Not Have To Compete With Any Other
Company, And Always Defeated The "BID" System Since The Product Was Sole Source. I Modified
The BBG and It's Original Board Over 31 Times. The Circuit Never Changed, And Only
The Circuit Board And What It Was Mounted In.
Here Is A
Good definitition Of Sole Source.
A Sole Source is a method of
acquisition and it is not to be used to avoid competition. Insofar as practicable, all
purchases shall be based on competitive bids; however, competitive bidding is not necessary
(A) Purchases which are clearly and legitimately limited to a single (sole) source of
(B) Purchases involving special services, or market conditions, in which instances the
purchase price may be best established by direct negotiation.
Example, One agency in the Midwest
wanted the BBG, but they wanted it concealed in a hotel room and since in all probability
the room would be physically searched, less any debugging gear, they requested I come up
with a concealed design that no one could recognize, much less find during a physical
search. I Took the contract, and with a free airline ticket in hand, visited the hotel
room. 4 days later I delivered the BBG, only in a new configuration. The hotel room had a
coat hanger rack in it's main room, and from years of experience of dipping objects with a
grid dip meter, I knew that a coat hanger dipped in the VHF range - would make the perfect
radiator ( Antenna ) - resonant in the VHF frequencies. What made it great was that these
coat hangers had a cardboard tube on the bottom - See Photo Below.
To Make A
Long Story Short, the BBG design was not changed,
and only the circuit board changed. The BBG was assembled in the cardboard tube with it's
surface mounted components standing on edge like razor blades, rather than flat - which
allowed me a very small board, and it's power source was kept at 9 volts X 2 rows connected
in parallel ( Series - But Connected In Parallel ) with hearing aid batteries, and copper
roofers flashing for the custom designed battery holder. It's antenna was the coat hanger
itself which was a perfect VHF match. I collected for this special design. It cost me 11
hours of my time to re-design the board, $18.00 in component cost and 4 hours to build it -
and 5 minutes to install it. The payoff was 16 times more than the original cost of the BBG
in it's it standard body wire configuration. Not bad.
Only One Example Of How Any Circuit Can Be, with a little creativity,
modified to a new configuration. It dosen't take a rocket scientist, an engineer, or anyone
with an education in electronic engineering. All it takes is someone with a creative desire,
good soldering and assembly skills, but most important - a good circuit board layout program,
and a desire to modify any board to another configuration. I can saw the BBG board in half,
fold it over and cut it's size in half. I Can saw it vertically, fold it or I can redesign
it's board to fit into anything anyone can dream up. Find A good board program, and there are
many - a lot of them free. Learn how to do your own boards, and you are home free. Hope the
info helps. John