Working Europeans on 20 metres while walking along the beach on Saturday 31 August 2013. Using 90cm magnetic loop and 5 watts. Band conditions were very good.
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https://www.youtube.com/watch?v=ShEaznYzoV4
Got 18 metres of wire, a couple of poles and not much space? If so this vertically polarised delta loop might work for you. It operates from 10 to 24 MHz and can give DX contacts. But is it directive? Watch the video and find out.
PS: Like these videos? Wish to support this channel? If so please store this link to Amazon Shopping as a bookmark or favourite. https://www.amazon.com/?&_encoding=UTF8&tag=v0108-20&linkCode=ur2&linkId=76822b913d6201ba868f1e9c3c326184&camp=1789&creative=9325 Then when you buy something I receive a small commission (at no extra cost to you). Or check my books page to see if any appeal. http://home.alphalink.com.au/~parkerp/vk3yebooks.htm
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https://www.youtube.com/watch?v=B3uZWJdvZ8I
Single letter Morse generator using two common CMOS ICs. Useful for foxhunt beacons etc. Change letter by inserting diodes on different pins of 4017 decade counter. Note the clock capacitor should be 2.2n not 1n as shown in the diagram (the sending with 1n would be fast).
Information on ICs used:
http://www.homemade-circuits.com/2011/12/how-to-understand-ic-4017-pin-outs.html
http://www.homemade-circuits.com/2011/12/how-to-understand-ic-4060-pin-outs.html
http://www.bowdenshobbycircuits.info/page5.htm
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https://www.youtube.com/watch?v=JF6ZgmThXxk
How adding an extra mouse and doing a small modification to it makes tuning a software defined radio easier.
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https://www.youtube.com/watch?v=HQdi_o5UHJo
Trying some WSPR from the beach. Conditions appear unenhanced. Running 5w to a 3 el tape measure yagi.
PS: To support this channel please start your Amazon Shopping here (no extra cost to you) https://www.amazon.com/?&_encoding=UTF8&tag=v0108-20&linkCode=ur2&linkId=76822b913d6201ba868f1e9c3c326184&camp=1789&creative=9325
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https://www.youtube.com/watch?v=owDMJIEcG_c
Some amateurs give, as their reason for not operating portable or in public, the looks and reactions of other people. This is even though they're doing nothing wrong. In this video I address these concerns and give some tips on overcoming the fear of transmitting in public.
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https://www.youtube.com/watch?v=pPOxee919fo
A simple kite that needs further development before it can support an antenna.
Based on design at: http://hilaroad.com/camp/projects/Kite/kite.html
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https://www.youtube.com/watch?v=UlGdlHrDkUM
AM activity from Frankston South. It was a hot day and few stations were on. Overall signals are well down from locations on the water such as Seaford and Mordialloc. Unfortunately no stations in Werribee, Geelong or the Peninsula were active, in which case this location would have been more suitable.
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https://www.youtube.com/watch?v=r7YrMpmNiPQ
Open wire feedline is a cheap and low-loss feedline ideal for feeding HF dipoles.
Open wire can tolerate significant impedence mismatches without adding much loss and in conjunction with a balanced antenna coupler allows multiband operation on a single dipole.
Unlike a coax fed antenna the length of the dipole is not critical but for best efficiency aim for a minimum 3/8 wavelength at the lowest operation frequency (ie 30 metres for 3.5 MHz or the 80 metre band).
Open wire should ideally be fed away from the antenna wire at right angles (to maintain balance) and kept away from metal objects such as masts and guttering. If using a mast in the middle of the antenna a timber one such as shown here http://www.youtube.com/watch?v=tWq4tgLH-yI is recommended.
A suitable antenna coupler to use is the Z-match by VK5BR: http://users.tpg.com.au/users/ldbutler/SingleCoilZMatch.htm
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https://www.youtube.com/watch?v=yrREQyMI7RI