Showing posts with label DIY. Show all posts
Showing posts with label DIY. Show all posts

Tuesday, January 12, 2021

477MHz Yagi? Not even close!

It would seem my DIY skills are not all that flash as my DIY 477MHz Yagi is resonant on 1.36GHz........ Looks like it is destined for the bin!










On a more positive note the 11M Vertical is 1.2 on channel 35, with no tuning on the antenna and no tuner in front of the rig. Caught lightning in the bottle with that setup!

Monday, February 25, 2013

EFHWV

Thinking about the next antenna and I'm liking this end fed half wave vertical in the video below. I already have the squid pole (need to check the length) and just need the 9:1 transformer dooby and some wire...and some coax. Looks great for portable work or on the side of the car when stationary.


Sunday, February 17, 2013

Dragon 10m HF portable is finished

A final bit of motivation and I finished my 10M portable radio. Here we are on Sunday finalising the wiring:
















It has a Dragon SS-485H HF rig along with a Z11 ATU and runs a 7Ah SLA, All housed in a bench instrument enclosure from Jaycar. Some space constraints within the enclosure so the ATU is on the outside. I have a section to attach some counterpoise wires but haven't made any up yet.
















And out in the back garden running a 2.4 metre ex-mil HF whip - ANT-129 22-30Mhz....





















A local operator Darren - VK4HDO, came back to my call on 28.480 reporting my audio as good but the signal was low and according to his radio I was about 3Khz off frequency.

.....and with a more managable HF antenna






















.....and on the radio bench running into the external 10M vertical


I'm hoping to get it ready for the WIA National field day on the 13th and 14th of April and see how it goes communicating from a hilltop.