#ghz_bands — Public Fediverse posts

Is an isolator overkill when measuring a Gunn diode oscillators output power?
Not even the frequency, just power.

#GHz #24GHz #ghz_bands

Absolute dumbest test setup.

#10GHz #ghz_bands

The badly soldered .141 coax broke off one of the radio clubs test antennas. So I fixed it more proper with more appropriately sized coax.
Pigtail used was a random one from the radio clubs "SMA pigtails"-drawer.

Nice antennas with nice and flat gain too.

#ghz_bands #hamradio

Some GHz stuff was done for a change.

#ghz_bands #10GHz #surplus

Setup for setting setting up the power meters and the drive amplifier output power.

#hamradio #GHz #ghz_bands #2.4GHz #13cm

:D 6.1eur BK4802 based radio from aliexpress has detectable harmonics up to ~12.5GHz.

#electronics #bk4802 #hamradio #GHz_bands #GHz

Made a quick combination of DC-block, volume control and BNC to 3.5mm adapter for testing a rather vintage Wiltron made 4GHz detector.
#GHz #ghz_bands #Wiltron #Crystal

YES!
Band is not gone.
Not back to it's former glory. but not some evil joke like 25mW EIRP limit or something.
But still very usable.
And unlike now, I should not have to buy back the band in 25kHz chunks if I want to operate on it.

More info: https://www.iaru-r1.org/2023/itu-r-recommendation-m-2164-on-23cm-amateur-service-and-rnss-operations-now-published-in-time-for-wrc-23-discussions/

Via: https://twitter.com/IARU_R1/status/1728081663672934751
#hamradio #amateurradio #23cm #1296MHz #GHz_bands

I love me some proper tools.

#geckokapula #jtag #segger #jlink #homebrew #hamradio #70cm #2400MHz #GHz_bands

Had some fun with cheap modules and made a #5760MHz #amateur band downconverter from a #RX5808 5.8GHz #FPV drone video receiver module.

https://www.youtube.com/watch?v=SQK5x-B4H-I

#GHz_bands #hamradio #hamr

Now this #OCXO module from ebay I hope to use with my #122GHz #VK3CV radio.
Should be good and it was decently cheap.
#GHz_bands #hamradio #radio

Haha! The receive local oscillator locks.

#hamradio #surplus #hardwarehacking #GHz_bands #Mobira #23cm

Whee!
No longer nanowatts!
From -60dBm to booming -8.6dBm on 1297.500MHz!
#quansheng #uv5k #23cm #1296 #GHz_bands #radio #modz

Hahaha! Guess what.
The BK4819 chip in the #Quansheng #UV5K radio DOES work on #23cm.
Just hitting filters (noise lump is from the UHF PA chain running full throttle on noise).

Glorious -60dBm on 1297.500MHz!
A whole 0.000001mW of it!

This beats the -75dBm we got from rtl_trx on 1270MHz (aberfoot unmodified rtl-sdr stick used as a trasnceiver).
I even worked OH3HMU on 1270MHz with an rtl-sdr stick So the power is kainda usable.

#hamradio #microwave #GHz_bands