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davenn's latest activity
davenn
replied to the thread
Collection of Lame Jokes
.
Friday, 10:46 PM
davenn
replied to the thread
Collection of Lame Jokes
.
Friday, 10:44 PM
davenn
reacted to
jtbell's post
in the thread
Collection of Lame Jokes
with
Haha
.
Local elections are coming up in a few weeks here. Uh-oh... next thing you know, they'll take over the whole county... then the whole...
Friday, 10:43 PM
davenn
reacted to
DennisN's post
in the thread
Collection of Lame Jokes
with
Like
.
Friday, 10:43 PM
davenn
reacted to
nsaspook's post
in the thread
Collection of Lame Jokes
with
Like
.
"Hello Darkness my Old Friend, I stood up too fast Again."
Friday, 10:42 PM
davenn
reacted to
jack action's post
in the thread
Collection of Lame Jokes
with
Haha
.
How many dead bodies does it take to change a light bulb?
Friday, 10:42 PM
davenn
reacted to
fresh_42's post
in the thread
How to use the "w" in www
with
Like
.
These are some - in my mind - useful insights I gathered over the years on PF. We have members from around the world, studying at...
Friday, 10:41 PM
davenn
replied to the thread
Stargazing
Exploring the Sun: Amateur Solar Imaging Techniques
.
The sun for 9th and 12th of May 2024. Canon 6D MKII, 800mm, F11, 125th sec, ISO400, white light solar filter Have been battling crap (...
May 12, 2024
davenn
reacted to
jack action's post
in the thread
Collection of Lame Jokes
with
Haha
.
May 11, 2024
davenn
reacted to
DennisN's post
in the thread
Collection of Lame Jokes
with
Haha
.
We need more of those :smile: :
May 11, 2024
davenn
reacted to
DaveE's post
in the thread
Variable vs constant power supply
with
Haha
.
Why does the Yugo have a rear window defroster?
May 8, 2024
davenn
reacted to
DaveE's post
in the thread
Submarine communications and RF skin depth
with
Like
.
Only in simple conductors with constant resistivity. Which is soooo far away from blue light as to be irrelevant. Don't confuse what...
May 8, 2024
davenn
replied to the thread
Custom UHF Yagi antenna build
.
just use 50 Ohm coax, you shouldnt be using 75 Ohm anyway you are using a 4 : 1 BALUN .... at most the feedpoint is only going to be...
May 8, 2024
davenn
reacted to
Guineafowl's post
in the thread
Custom UHF Yagi antenna build
with
Like
.
A quick update: I’ve built a prototype using the 15mm and 3/16” copper pipe that I have. I’ll come back with some details and VNA plots...
May 8, 2024
davenn
reacted to
Averagesupernova's post
in the thread
Custom UHF Yagi antenna build
with
Like
.
The idea is not a permanent antenna with the sliding tubes. They're meant to be used to prototype antennas. Many different antennas can...
May 8, 2024
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