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1000023570
Vu2 Gentral Grade

VU2HS

  • 1 month ago
  • 2 views
new-ima
Vu3 Restricted Grade

Pannir vu3tno tamilnadu 145.150mhz contact 07:00 am to 07:00 am

  • 1 month ago
  • 1 view
FREQUENCY ↔ WAVELENGTH CALCULATOR | DESIGNED BY VU3TNO
Formula: λ(m) = 300 / f(MHz) | λ(m) = 299792458 / f(Hz) | f(MHz) = 300 / λ(m) | Velocity of Light c = 299,792,458 m/s
1. FREQUENCY TO WAVELENGTH
Wavelength (m)--
Wavelength (cm)--
Quarter λ--
2. WAVELENGTH TO FREQUENCY
Freq (MHz)--
Freq (kHz)--
Band--

📻 HAM RADIO ANTENNA CALCULATOR

Enter your target frequency to calculate precise wire lengths.

⚡ Half-Wave Dipole (Total)
32.96 feet
Each Leg: 16.48 ft
📡 1/4 Wave Vertical Element
16.48 feet
Radial wires should match this length

🎮 INTERACTIVE CW / MORSE CODE AUDIO TRAINING CHALLENGE

Test your radio copy ears! Click "Generate Audio Code" to hear the Morse sidetone, type the word, and verify.

GAME MASTER INTERFACE
SCORE INDICES: 0 Points
OPERATOR TEXT ENTRY DECK
CONSOLE MONITOR: Ready for session initiation transmission...

🌍 HAM RADIO GRID SQUARE LOCATOR

Enter Latitude and Longitude values below, then click the button to find your Maidenhead Grid Square instantly.

YOUR MAIDENHEAD GRID LOCATOR
MK81aa

🎼 AUTOMATIC CW / MORSE GENERATOR & PRO SIGN LIGHT

Type smoothly—only the newly added character will sound. Adjust speed using the slider.

CW BLINK
AUTOMATIC MORSE OUTPUT
...- ..- ..---
📡 4 ANTENNA CALCULATORS | DESIGNED BY VU3TNO
1. DIPOLE ANTENNA
Total: --
Each Leg: --
Formula: 468/f ft
2. EFHW ANTENNA
Wire: --
With 0.95 VF: --
49:1 Balun Needed
3. J-POLE / SLIM JIM
3/4λ: --
1/4λ Stub: --
Gap: ~2 inch
4. YAGI-UDA SPACING
Ref: --
Driven: --
Dir1: --
Spacing 0.2λ
Formula: Dipole 468/f(ft) | EFHW 468/f | J-Pole 702/f(ft) | Yagi 492/f -5% +5%

📻 CALL SIGN NATO PHONETIC GENERATOR & VOICE PTT

Type your call sign—it translates instantly. Click the PTT button to hear the audio voice broadcast.

OFFICIAL VOICE TRANSMISSION SPELLING
Victor Uniform Two X-Ray Yankee Zulu
Full Width Ultra Compact DX Cluster

📡 LIVE GLOBAL DX CLUSTER MONITOR

● LIVE REFRESH
Real-time feed synchronised with major global DX cluster telnet nodes.
UTC / GMT
00:00:00
Date, Day
YOUR LOCAL TIME
00:00:00
Date, Day

🌍 GLOBAL DX TIME ZONE DIRECTORY

Country / Region Time Zone Offset Current Day & Date Live Time (24h)
Emergency & Disaster GLOBAL
  • Global Distress (HF)14.300 MHz
  • IARU Emergency7.110 MHz
  • Intl Calling145.500 MHz
  • Satelite Distress435.000 MHz
Disaster & Emergency LOCAL (VU)
  • National VHF145.000 MHz
  • Emergency HF7.060 MHz
  • Disaster Backup3.560 MHz
  • EcoLink Emergency*INDIA*
Important & Common GLOBAL
  • 20m DX Center14.230 MHz
  • 40m DX Center7.150 MHz
  • QRP Calling7.030 MHz
  • FT8 Digital Mode7.074 MHz
Important & Common LOCAL (VU)
  • VHF Calling145.500 MHz
  • VU South Traffic7.080 MHz
  • VU North Traffic7.050 MHz
  • DMR National TGTG 40404

☀️ IONOSPHERIC SOLAR SPECTRA RADAR

Shack telemetry dashboard monitoring real-time space weather indices for HF amateur radio band propagation.

LIVE BAND STABILITY CHANNELS
SOLAR FLUX (SFI)
142
High Band Active
A-INDEX INDEX
4
Stable Field
K-INDEX MATRIX
Kp 1
HF Bands Quiet
Band Forecast: 40m-20m: EXCELLENT 15m-10m: GOOD VHF/UHF: LOCAL
CONSOLE INDEX RULES
  • SFI (Solar Flux): Higher is better. 150+ means excellent high band openings (10m, 15m).
  • A / K Index: Lower is better. Below 3 means quiet, stable ionosphere loops. High values mean storms blocking HF bands.
  • Signal Pathways: Keep an eye on solar flares to anticipate sudden radio blackout warnings.

🇮🇳 ALL INDIA VHF / UHF REPEATER LIVE DIRECTORY

Official coordinate matrix mapping active amateur radio repeaters across India. Filter by your target State.

State Location / QTH Callsign Output (Listen) Shift Direction Input (Tx) Club / Association Remarks

📻 DYNAMIC RADIO OPERATOR UTILITY CENTER

Live synchronized systems. Access live radio clocks, custom propagation status markers, and tools simultaneously.

TIME CHANNELS
UTC TIME
00:00:00
LOCAL TIME
00:00:00
PROPAGATION SPECTRA
Band Tier Day State Night State
40 Meters FAIR EXCELLENT
20 Meters EXCELLENT FAIR
10 Meters FAIR CLOSED
ACTIVE GRID BEACON
MK81
🔶 ERP / VSWR / IMPEDANCE MATCH | DESIGNED BY VU3TNO 🔶
1. ERP / EIRP
EIRP: --
ERP: --
Formula: EIRP=Tx+Gain-Loss
2. VSWR CALCULATOR
VSWR: --
Return Loss: --
Ref Coeff: --
3. L-NETWORK MATCH
Q: --
L: -- | C: --
High-Pass / Low-Pass L
ERP = Ptx + G - Loss | VSWR = (1+Γ)/(1-Γ) | L-Match Q = √(Rhigh/Rlow -1)
🗺️ GRID & DISTANCE / BEARING | DESIGNED BY VU3TNO 🗺️
1. MAIDENHEAD GRID CONVERTER
Grid: MK86qt | LatLon: 9.92, 78.11
2. GREAT-CIRCLE DISTANCE & BEARING
DISTANCE--
BEARING--
LONG PATH--

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COAX IMPEDANCE CALCULATOR | DESIGNED BY VU3TNO
Formula: Zo = (138 / √εr) × log₁₀(D/d)   |   Alternative: Zo = (60 / √εr) × ln(D/d)   |   C = 55.63×εr / ln(D/d) pF/m
Zo (Ω)--
Cap pF/m--
Ind nH/m--
VF--
🌿 RESISTOR & OHM'S LAW | DESIGNED BY VU3TNO 🌿
LEFT: RESISTOR COLOR CODE
VALUE2.2kΩ
OHMS2200 Ω
RIGHT: OHM'S LAW
V--
I--
R--
P--
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