Appendix A: Diy Antenna And Improvement Tips; Simple Gp Antenna Design; Some More Improvement Tips - PCS Cybermax FM+ 15W DSP Manual

Appendix A: DIY antenna and improvement tips

Simple GP antenna design

You can build an inexpensive 1/4 wave antenna from 1 so-239 chassis mount rf connector and 5 - 3' bronze welding rods,
cut to the proper length. Here is how it looks:
Fig. 18: »Do it yourself« GP antenna
Most designs on the web don't compensate for the fact
that GP antennas are not wideband antennas. Here is a
Freq/element length chart for this simple GP antenna, all
element lengths are in millimeters:
For other antenna designs check our web site here: http://www.pcs-electronics.com/guide_antenna.php

Some more improvement tips

Think about purchasing SWR meter to tune and align your antenna. A good antenna system is extremely important and can
make up for a lot of power. For a suitable SWR meter check:
http://www.pcs-electronics.com/cn101l-daiwa-power-meter-p-347.html
If you can't get much range with your homebrew antenna, have a look at these:
http://www.pcs-electronics.com/antennas-c-38.html
Still not enough range? Well, how about a 750W amplifier?
http://www.pcs-electronics.com/750w-digital-amplifier-19inch-rack-p-1295.html
Brought to you by PCS Electronics, www.pcs-electronics.com
Frequency Radiator - B
108MHZ 660mm
104MHz 684mm
100MHz 713mm
90MHz 792mm
Appendix
A
If you have a SWR meter,
leave a bit longer radiator
and adjust it later by
cutting to achieve
minimum SWR.
Radials - A
693mm
720mm
749mm
819mm