There's a lot on this page, take some time
looking around !!
If you have something interesting, let the webmaster know !!
Part 97 - Rules of the Amateur Radio Service
Dipoles are easy
cheap to install, almost invisible and work good. They should be installed as
high as possible - in the clear -- away from metal parts of your house, and
away from power
link to Loss calculator
Quick thoughts: the longer the coax the more power you lose,
the LOSS also effects how much of the received signal you lose.
The higher the frequency, the more you lose.
Bigger diameter coax usually has less loss.
Knowing the impedance of your antenna and the coax is important.
A dipole is actually close to 75 Ohms. SO, you can use cheap RG-59
or RG-6 TV cable since its also 75 Ohms.
I (k0ip) used 75 ohm coax (RG-11) for years on dipoles, it works just fine.
the biggest problem using cheap TV coax is --- its not copper
and hard to solder to. Its best to make a good crimp with a F connector
and get an F to PL-259 adapter.
you can save a bunch ($$) by thinking outside the box !! BUT its not nearly user friendly
as copper coax..
Another coax loss page, http://www.w4rp.com/ref/coax.html
WHAT THE HECK
what kind of coax is this ?
THIS IS A PDF.
|Vertical antennas need a GOOD ground system, radials , etc
Vertical Calculator Calculations depend on the diameter of the conductor / pipe
SWR Chart . CHART
Do it all Antenna Calculator , Beams,
|Here's Three pages of information about Diode,
Transistor , and
three Pin Voltage Regulators, stolen from a Russian Web. Someone
did a great job, of course its not 100% , there are "billions" of transistor numbers out there, but this might be a good place to start
your search if you need info..
Three Pin Regulators
heres a list of various Frequencies used by many different radio
services. it covers LF to microwave, Cell phones, to Aircraft on HF, GRMS
Family Radio, GPS , Boats, and lots of other stuff,
check it out, note tabs at the bottom for different services
KōIP's Frequency Book
|microphone connections, check this out
for the pin out of your radio .. want to
connect a TNC , ETC, this is it.
A Great amount of useful
information about how to do just about anything
| ASCII and 5 level Teletype codes..
lots to see
|Looking for a simple Shortwave
Receiver, here's some tips
see this link
|6 meter Halo , etc, antenna designs
Links for three different antennas that will get you on 6 meters with style !!!
Link one copper
Link two aluminum
Link three this & that
for you deep thinkers,
this is a in-depth handbook about Impedances
This is a 152 page book, if you can understand even a little bit of it, your ready
for a PhD...
Keysight's impedance measurement instruments have been in the industry for
over 40 years. Optimized for your frequency range, measurement parameters,
accuracy, and your device or material, we offer LCR meters,
Impedance Analyzers ..
For most hams the current 'crop' of test equipment is priced out of reach. However
Keysight in the olden days was called HP Hewlett Packard.. They did and do make
some of the best test equipment in the world, and lots of the old stuff will do the job in style !
Link to the Impedance Measuring Handbook
|QSL CARDS Guidelines
First, if at all possible to have your card printed on a 3 1/2"x 5 1/2" post card card stock, not a piece of paper, something like postcard thickness. To make mine, I use both 67 and 110 LB Bond.
information needed :
Here is a copy of my present card, I make my own on my old trusty HP4
laser printer, sometimes not an easy task, and I am not sure its
cheaper than buying pre-printed
you will notice I did away with the Pse and Tnx confusion , the
RST is preprinted since