How
to Build your Emergency Radio Kit updated
4/2023This
guide is to give you ideas and solutions to Building up a nice containerized
deployable radio kit as seen on Video
Demo "green" kit
KIT 2A Latest April 2023 version reconfigured for WINLINK VARA
FM High Speed An upgrade from older KPC3 & 1200bps packet .
KIT
2 started with black
anodized aluminum 3mm panel with holes for the pelican 1450PF panel frame.
Starting with this is a lot faster, neater and easier to develop your own
design.
KIT 2 Black anodized 3mm aluminum panel with hole for fuses, internal and external
source, DC loads, AC source and use 80 mm fan.
Panel laser cut by Front Panel Express.
Back
in 2010 parts were available from Radio Shack. Radio can be mounted
to the top of the panel or remote inside the case with
just the control head on
the top and additional holes you would need to drill for the antenna and
microphone if radio is mounted below deck.
This 2010 version with KPC3+ and db9 serial port,
it was revised in 4/23 photos at the very top of page
My "guide" for kit builds is to prioritize
PAR (Power) (Antenna) (Radio) in that order and these 3 parts are
packed separately
1) Power is the first requirement (NO
POWER NO COMM) you may have different kits, power should be a separate
kit for many reasons
- cannot transport battery in cargo compartment
of aircraft
- cannot recharge away from field radio setup
such as solar panel charge. too far, too much current loss with DC
- excessive weight if in radio kit, may
need to get kit up stairs or distance from vehicle
- power duration needs to be computed depending
on radio equipment/ computer to be used for sustained operation
- if using BIOENNO batteries they have good charts
on time/battery/transceivers with duration expectations.
- if operating a WINLINK station calculate
computer power needed to sustain operation and voltage. most fail this step.
2) Antenna and Coax
Get the highest
gain and most practical for transportation and setup.
- Use a Coax
calculator or read the manufacturer specifications.
- Too long coax is counter productive and maybe
net neutral between high gain antenna and coax loss
- The more effective the antenna system will
increase both TX and RX range
- Increasing power on a Transmitter only boosts
signal in one direction and doesnt increase the receive signal is why
antenna system is very important.
- Antenna are outdoors which means coax/antenna
should be bagged separately as it will get dirty possibly muddy.
3) Radio select
a radio carefully depending on how much power you have available.
- IF you can afford it, pick a good quality
radio like ICOM KENWOOD or YAESU or commercial radio such as a MOTOROLA.
- Check your STANDBY CURRENT in specification
or actual current reading to calculate your operational time
- Most MOBILE radios suck power on standby
unlike a HT . You may not have battery power left just by monitoring
in stby mode.
4) ARE YOU A SAVY OPERATOR ?
POWER MINIMAL?
- Think about your situation, dont have enough
power for the radio? do work around monitor use a HT on outside antenna and
when traffic needs to be moved switch to mobile?
- create a contact schedule with Net control.
agree to make contact with Net Control at a certain time or time interval.
and power down in between
- CALCULATE how much power you will need to
sustain communication over time. A lot will FAIL this step and
can only be on air a fraction of a day
ANTENNA MINIMAL?
- unable to put up a high antenna in the
field? can you get to a high location instead? a hand held radio on a
5/8 wave antenna from atop high floor of a building or terrain will give
decent range
- are you in range of another station on
simplex that can relay voice or winlink?
RADIO MINIMAL?
- If youre planning on using a BAOFENG with a
spare battery that usually puts you in a difficult place to assist in EMCOMM
and should consider investing in all the above.
- you may be able to assist inside a shelter or
other that does not require long range comm or duration after a
Disaster or Major Event, possibly not use amateur radio .
TRAINING
- To be of any use in EMCOMM you should
participate in training and nets.
- never self deploy it just creates chaos without
being directed to do so
- participating in NETs will at least
give you a feel for range and others capabilities and technologies that will
be used during an event.
WHY GO KITS FAIL?
- Its not the electronics that fail.. its the
design that is a failure from the start. A lot of inexperienced amateurs
will build a GO KIT that is way overweight
- overweight as in too heavy to carry except
out of the trunk of a car, not able to go up stairs, or grass terrain or
operator space is smaller then the kit.
- Kit is too complex only the designer
understands the controls /connections of the kit therefore limiting its
usefulness in multiple shifts of operation
- modern radios require actually reading the
manual unlike the basic radios of yesteryear whereby knob turning was the
only "MENU"