04/21/21 19:30:05 UTC
130.300 MHz
ALBEMARLE, NC
Ongoing encrypted signal, not P25.. Presumably from CN-235 96-6046 (ae0437) seen on adsbexchange currently orbiting Asheboro NC (KHBI) area at 16,000ft. 1515h 4/21/2021. -AJ
 
04/20/21 14:57:01 UTC
235.100 MHz
CLINTWOOD, VA
Mid air re-fueling training
 
04/20/21 01:27:39 UTC
240.350 MHz
CLINTWOOD, VA
Mid air re-fueling training Decee 11
 
04/17/21 18:10:17 UTC
69.450 MHz
GRAVEL SWITCH, KY
4 Helos A/A possible UH-60's came from south west and landed Lexington Very long conversation - Talked about Bluegrass Terrain and getting food at Lexington and flying low.
 
04/16/21 16:13:24 UTC
343.250 MHz
CLINTWOOD, VA
Mid air re-fueling training
 

04/13/21 23:15:06 UTC
130.300 MHz
Encrypted signal, identical in audible characteristics to tx's heard on 75.65FM during same timeframe. Not P25.. Presumably from AE66CD currently orbiting Stanly/Montgomery/Anson counties approx 1100-1300h, area on adsbexchange. 4/13/21 -AJ
 
04/13/21 19:11:36 UTC
341.675 MHz
KFBG SIMMONS AAF NOTAM: M0248/21 - AERODROME - FLIGHT STRIP 2 (PU895947) HHC, 2-82ND AHB WILL BE CONDUCTING A COMPANY FTX WITH 1 H60 AIRCRAFT AS PART OF THE OPERAION CONDUCTING PERSONNEL RECOVERY TRAINING. OPERATIONAL FREQUENCIES ARE 341.675 (UHF) , 141.050 (VHF) AND 69.875 (FM).. THE FLIGHT STRIP IS OPEN TO ALL OTHER ROTARY WING AIRCRAFT. 13 APR 15:13 2021 UNTIL 17 APR 02:00 2021. CREATED: 13 APR 15:14 2021 -AJ
 
04/13/21 19:10:59 UTC
141.050 MHz
KFBG SIMMONS AAF NOTAM: M0248/21 - AERODROME - FLIGHT STRIP 2 (PU895947) HHC, 2-82ND AHB WILL BE CONDUCTING A COMPANY FTX WITH 1 H60 AIRCRAFT AS PART OF THE OPERAION CONDUCTING PERSONNEL RECOVERY TRAINING. OPERATIONAL FREQUENCIES ARE 341.675 (UHF) , 141.050 (VHF) AND 69.875 (FM).. THE FLIGHT STRIP IS OPEN TO ALL OTHER ROTARY WING AIRCRAFT. 13 APR 15:13 2021 UNTIL 17 APR 02:00 2021. CREATED: 13 APR 15:14 2021 -AJ
 
04/13/21 19:09:51 UTC
69.875 MHz
KFBG SIMMONS AAF NOTAM: M0248/21 - AERODROME - FLIGHT STRIP 2 (PU895947) HHC, 2-82ND AHB WILL BE CONDUCTING A COMPANY FTX WITH 1 H60 AIRCRAFT AS PART OF THE OPERAION CONDUCTING PERSONNEL RECOVERY TRAINING. OPERATIONAL FREQUENCIES ARE 341.675 (UHF) , 141.050 (VHF) AND 69.875 (FM).. THE FLIGHT STRIP IS OPEN TO ALL OTHER ROTARY WING AIRCRAFT. 13 APR 15:13 2021 UNTIL 17 APR 02:00 2021. CREATED: 13 APR 15:14 2021 -AJ
 
04/08/21 15:29:57 UTC
130.300 MHz
FLIP33 to OMEGA DZ/CCT, doing night-time bundle drops at KVUJ. 2100h+ 04/07/2021. -AJ
 
04/08/21 15:28:28 UTC
130.300 MHz
FLIP33 doing night-time bundle drops at KVUJ. 2100h+ 04/07/2021. -
 
04/06/21 16:36:55 UTC
38.650 MHz
A2A, helos "...in the forest that I saw, they definately weren't regular campsites..." 1140h, 04/06/2021 -AJ
 


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Microwave Frequency Letter Bands

Everytime I see a reference to the "C" band or "Ku" band I can never remember what frequency range these microwave letter bands are refering too.

As a result I've created this handy little cheat sheet, hopefully it will help you as well.

Standard Radar Frequency Letter-Band Nomenclature(IEEE Standard 521-2002)

Band Designator Frequency (GHz) Wavelength in Free Space (centimeters)
HF 0.003 to 0.030 10000 to 1000
VHF 0.030 to 0.300 1000 to 100
UHF 0.300 to 1 100 to 30.0
L band 1 to 2 30.0 to 15.0
S band 2 to 4 15 to 7.5
C band 4 to 8 7.5 to 3.8
X band 8 to 12 3.8 to 2.5
Ku band 12 to 18 2.5 to 1.7
K band 18 to 27 1.7 to 1.1
Ka band 27 to 40 1.1 to 0.75
V band 40 to 75 0.75 to 0.40
W band 75 to 110 0.40 to 0.27
mm 110 to 300 0.27 to 0.10