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#amateurradio

13 posts11 participants5 posts today
Doughnut Lollipop 【記録係】:blobfoxgooglymlem:
Public

Continuing from here [bbs.kawa-kun.com]…

I put up a dipole this time, and while I did receive marginally more stuff than before (only in the 2m and 70cm bands), there was also a lot of noise. The length of each leg of the dipole was calculated like this, with the velocity factors estimated for the copper wire and insulation.

(299792458 / 52_000_000 * 0.95 * 0.95) / 4

I did get the copper pipe for making a sleeve balun. Would that further improve things? :blobfoxthink:

#AmateurRadio#HamRadio
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Røde
Public

Sunset #sota to round the weekend off, Kerloch GM/ES-059 with contacts from Peterhead to Dundee on 2m. The RH770 is a solid antenna.

10km walked, 450m climbed and summit activated in under 2 hours. Pleased with the pace.

More wind than I expected, shorts and no gloves was a brave combination on the summit for this time of year!

I made lots of excited sounds when I hit the shoulder of the hill and the landscape came into view, bathed in light about 15 minutes before sundown. It was a joy to be on the summit at that time.

Me in a yellow jacket holds a walkie-talkie and smiles at the camera, standing against a colorful sunset sky. The background features a rocky landscape and distant hills.
A panoramic view of a mountainous landscape at sunset, featuring rolling hills, low-lying clouds, and a gradient sky transitioning from blue to orange. The foreground includes patches of heather and trees, while the clouds hover over the peaks in the distance.
A serene landscape during sunset, showcasing rolling hills and valleys with a warm, orange glow. In the foreground, a stone structure is visible, and the sky transitions from blue to orange and pastel hues.
#amateurradio#hamradio
Doughnut Lollipop 【記録係】:blobfoxgooglymlem:
Public

Well, I tried building my own ¼-wavelength monopole with the metal railing and everything it's attached to as the ground plane, but it didn't work very well. :blobfoxgooglycry:

I'm targeting 6-meter with this, but I thought it'd make sense to use the middle of the band (52 MHz) as the target, so I did (C / 5200000000) / 4 to get the length of 1.44 meters.

What did I do wrong? :blobfoxsad: #HamRadio #AmateurRadio

Victoria (K8VSY) (she/her)
Public

so, a few months ago I got an email from the local ARRL Bureau for QSL cards, and they said I had some waiting, so I sent them the $3 and waited... lol

I just got the mail today, and oh my gosh, there has to be 30 to 40 QSL cards for the past 5 years here! 😮 this is going to take some time to catch up on, 😂

#HamRadio#AmateurRadio#hamr
Doughnut Lollipop 【記録係】:blobfoxgooglymlem:
Public
Still not having much luck here. I shortened the dipole to try to cover the 2m band and did get more stuff coming in, but it was all noise. :blobfoxsad:

I can't realistically make the ladder line fully vertical due to space constraints. Maybe I just need to build a monopole instead? The balcony railing might make a good ground plane. :blobfoxthinkgoogly:

Or do folks think an external antenna tuner would be worthwhile here? :blobfoxthink:

#AmateurRadio #HamRadio
#hamradio
Bo Morgan
Public

Just hooked up an oscilloscope to my HF antenna feed line and it looks like I'm getting a large ~1 MHz signal from the antenna before being filtered in the transceiver to receive 14.074 MHz.

#hf#ham#radio
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