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We will start fox hunting after it cools down a little in the 445 part of the band. You need to watch the post by KD6UMU above to get a lot of good ideas about fox hunting. The presentation starts 8 min into the meeting.
KD6UMU, KI5VGQ and WB5JT have already built these antennas and have been doing some hunting to try out the system. How to build the antenna can be found at:
http://www.wa5vjb.com/references/ClubYagiProject.pdf
Select the 445 MHz design.
A good switch attenuator can be found at:
We could do the hunt Saturday mornings before the meeting, say 7 AM? Or we could do them other days. When it cools down in a couple of months we could do them any time during the day. Give me your thoughts. All hunts will be inside the Loop around Paris for now. – Jerry
Look for “RA-1728A Variable/Step Attenuators RF ATTENUATOR 82DB 50Ω for Ham Radio Transmitter” on Amazon. Do not transmit thru the attenuator.
Please click here to go directly to the item. – Phillip Beall (W5EBC)
Amazon is out of switch attenuators. Go to Ebay and type “RA 1728” without the quotes in their Query engine and you will find several of them.
for the hackers out there:
The Quansheng UV-K6 – A game changer for Radio Direction Finding? (Wide range RSSI meter). – YouTube
https://www.youtube.com/watch?v=h8llT_5MrHE
a two way radio with a signal strength readout of +7 to -120?? dbm
or
DW-400 RF Field Analyzer – Good for Radio Direction Finding? – YouTube
https://www.youtube.com/watch?v=Pmii34mDVF4
a tunable RF field analyzer that reads from 0 to -126 dbm
0 dbm being 1 milli watt and -126 dbm being about the max sensitivity of a good VHF radio.
Note: these may max out before you get within 50 foot of the fox, so you still need a sniffer.
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