Rank Prefix Entity Name 1. P5 DPRK (NORTH KOREA) 2. 3Y/B BOUVET ISLAND ✅ 3. FT5/W CROZET ISLAND ✅ 4. BS7H SCARBOROUGH REEF ✅ 5. CE0X SAN FELIX ISLANDS ✅ 6. BV9P PRATAS ISLAND ✅ 7. KH7K KURE ISLAND ✅ 8. KH3 JOHNSTON ISLAND ✅ 9. VK0M MACQUARIE ISLAND ✅ 10. FT5/X KERGUELEN ISLAND ✅
“The flexibility of this new technology is just amazing. When you purchased a radio in the past what you got was locked in. With the new technology the manufacturers can easily add changes and updates that can be downloaded to the radio to both correct and add new features. The IC 7610 is just a
To build a HF station we need some essential components and some optional ones. Now I will discuss the feedline between equipment and the antenna which is commonly Coax cable and the common connectors used in Amateur Radio. Regardless of whether you are operating at HF, VHF or UHF, the quality of your feed line
After a long time playing with Optibeams we did sell our property and we’re moved to our new property next to some national park.Unfortunately there we’re big strong rules in this area for putting up big antennas. Well…after i did sell the OB’s to a good friend i did do some research on the
HF PROPAGATION Good knowledge of the propagation of radio waves and procedures when making connections are very important. The weather is an important factor. Here is some more information about propagation and the sunspot cycle prediction. There are a number of layers in the ionosphere. Two, there are important: the lower-layer D, which mainly absorbs the low frequencies, and
This antenna is a full wavelength single-delta-loop, with the point of the triangle at the top of the single support pole, and fed near one of the corners – One Quarter Wavelength down the diagonal leg. Feeding and matching is simple; it’s fed with a quarter-wavelength of RG-11 or RG-59 (75 Ohm) coax, and then any length of
Many thx for DJ0IP (Rick) & ARRL for contribute this subject! (A) Coiled Coax Choke The coiled coax choke is the easiest to make but also the least effective. If it works, use it. Otherwise use something better. For details see the ARRL HANDBOOK or ARRL ANTENNA HANDBOOK. Scrambled-Wound Choke? OK or not? I honestly do not know
01 – Tee Antenna 02 – Half-Lamda Tee Antenna 03 – Twin-Led Marconi Antenna 04 – Swallow-Tail Antenna 05 – Random Length Radiator Wire Antenna 06 – Windom Antenna 07 – Windom Antenna – Feed with coax cable 08 – Quarter Wavelength Vertical Antenna 09 – Folded Marconi Tee Antenna 10 – Zeppelin Antenna 11
Januari DL 144 MHz AGCW contest (1 januari) DL 432 MHz AGCW contest (1 januari) Zendexamens N&F in Nijkerk (9 januari) Frankrijk contest korte duur 432 MHz, 1,2 en 2,3 GHz (13 januari) Heelweg Microwave meeting (19 januari) Frankrijk contest korte duur 144 MHz (20 januari) Februari Groninger Radio Treffen GRORAT (9 februari) PACC contest (9 en 10 februari) Techno-nostalgica beurs in
Ofcourse there are many transceivers and many opinions about them…..but these are mine: Icom IC-7610 with the SP-41 speaker. I think it can be the best TRX nowadays….esspecially when i talk about DX receive. Well…..it was time to put the new Icom IC-7610 with External speaker on my desk. Very happy with this new top
