Q R PQ R PQ R PQ R P It’s how to spell “Fun”! Shel Radin KF0UR.
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Q R P
Its how to spell Fun!Shel Radin
Tonights AgendaWhat is QRP?Why would I use it?What are some options?What else should I know?
What is QRP?Its not just low power
QRP is defined as 5 watts or less on CW10 watts PEP or less on SSB
QRPp is 1 watt or less
Why Use QRP?Its an adventureIts differentIts a challengeIts something new to try= Its fun
slogan: "Power is no substitute for skill
QRP RigsWhats a QRP Rig?Youd be surprised at the variety
There are big rigsfor home useYaesu FT-9000Icom 7800
There are medium rigs typical for home or portable useYaesu FT-897Icom IC-735
There are small rigs typical for home or portable useElecraft K2Kenwood TS-50Yaesu FT-817
There are really small rigsknown as trail friendly Elecraft K2SierraWildernessOak Hills ResearchOHR 500
And then there are tiny rigsvery trail friendlyTuna TinYepthat is a Chicken of the Sea tuna can (tuna removed, hopefully )
Or if you prefer Altoids over TunaKD1JVsATS-3
And for antennasThere are big antennas
There are smaller, portable antennasBuddipolePar End fed ZeppForce 12 Sigma 5
Portable Homebrew HF Vertical
Its whats inside that countsEach extends to 6 feet
And if you put it together12 when fully extended
QRP SuppliersInclude:ElecraftOak Hills ResearchSmall Wonder LabsWilderness RadioNorthern California QRP Club (Norcal)HendricksBuddipolePacific AntennaForce 12
What can you do with these?Just about anything you want.The bigger rigs have all modes and bandsThe medium rigs usually have them all, as wellThe small rigs trade features for sizeElecraft KX-1: 20M, 30M, 40M, 80M CW only, 4 watts
Very attainable goalsWorked All States (WAS)DX Century Club (DXCC)Contesting (QRP entry)
QRP OrganizationsAdventure Radio SocietyShare triumphs and tribulationsSponsors contestsFlight of the BumblebeeAwards for miles per wattQRP Amateur Radio Club International Northern California QRP Club (NorCal) Colorado QRP ClubAmerican QRP Club+ More
ButI wont be heard!Oh yes you will! Math class is now in sessionConsiderOne S unit on your receiver is 6 dB. Halving your power is only a 3 db loss.Quartering your power is 6 dB loss and therefore a one S unit difference.Let me repeat that: using of your power reduces your signal only 1 S unit.
More Math (sorry)If a 100 watt signal is received as an S9, thenA 25 watt signal ( of 100 watts) will be S8 (-6 dB)A 6.25 watt signal ( of 25 watts) will be S7 (-12 dB)A 1.5 watt signal ( of 6.25 watts) will be S6A 5 watt signal will be just under S7
There are QRP Calling Frequencies
(where to hang out to improve your odds)
BandCWSSB1601.8101.910 1.843 Europe 803.5603.985 3.710 US Novice 407.0307.285 7.030 Europe7.060 7.110 US Novice 3010.106 2014.06014.2851521.06021.3851028.06028.385 28.110 US Novice
One more QRP difference
Some QRPers sign with 72 instead of, or in addition to 73 when signingTo acknowledge the QSO using QRP powerKinda like a not-so-secret hand shake.
In SummaryTry it from home by simply turning down your power Try it from a park bench with your portable rig.Try it from your car, if you have a mobile set-up.
Enjoy another wonderful facet of our hobby!
Thanks for your time!
C U on the air
72, Shel KF0UR