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Field Test | Raspberry Pi | WSJTX FT8 Digital Portable
WSJT-X implements communication protocols or "modes" called FT4, FT8, JT4, JT9, JT65, QRA64, ISCAT, MSK144, and WSPR, as well as one called Echo for detecting and measuring your own radio signals reflected from the Moon. These modes were all designed for making reliable, confirmed QSOs under extreme weak-signal conditions.
JT4, JT9, JT65, and QRA64 use nearly identical message structure and source encoding (the efficient compression of standard messages used for minimal QSOs). They use timed 60-second T/R sequences synchronized with UTC. JT65 and QRA64 were designed for EME ("moonbounce") on the VHF/UHF bands; JT65 has also proved popular and effective for worldwide QRP communication at HF. JT9 is optimized for the LF, MF, and HF bands. It is about 2 dB more sensitive than JT65 while using less than 10% of the bandwidth. With either JT9 or JT65, world-wide QSOs are possible with power levels of a few watts and compromise antennas. JT4 and QRA64 are optimized for EME on the VHF and higher bands, and especially the microwave bands from 2.3 to 24 GHz.
FT4 and FT8 are operationally similar but use T/R cycles only 7.5 and 15 s long, respectively. MSK144 is designed for Meteor Scatter on the VHF bands. These modes offer enhanced message formats with support for nonstandard callsigns and some popular contests.
As described more fully on its own page, WSPR mode implements a protocol designed for probing potential propagation paths with low-power transmissions. WSPR is fully implemented within WSJT-X, including programmable "band-hopping".
FT8 — the latest digital bauble to capture the imagination of the Amateur Radio community — has been luring away many of those already using the popular JT65 “weak-signal” mode. FT8 is included in a beta release of WSJT-X, version 1.8.0-rc1.
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https://www.youtube.com/watch?v=dx3xbZXV34I
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My Favorite Ham Products
Yaesu 891
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Big Shot Sling Shot
https://amzn.to/2SRCDZT
? Yaesu 891 https://amzn.to/2RLdPVY
? MFJ manual tuner https://amzn.to/2WarftS
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https://www.youtube.com/watch?v=tACX1en9xJY
Thunderstorm is a rain shower during which you hear thunder. Since thunder comes from lightning, all thunderstorms have lightning.
Why do I sometimes hear meteorologists use the word “convection” when talking about thunderstorms?
Usually created by surface heating, convection is upward atmospheric motion that transports whatever is in the air along with it—especially any moisture available in the air. A thunderstorm is the result of convection.
What is a severe thunderstorm?
A thunderstorm is classified as “severe” when it contains one or more of the following: hail one inch or greater, winds gusting in excess of 50 knots (57.5 mph), or a tornado.
How many thunderstorms are there?
Worldwide, there are an estimated 16 million thunderstorms each year, and at any given moment, there are roughly 2,000 thunderstorms in progress. There are about 100,000 thunderstorms each year in the U.S. alone. About 10% of these reach severe levels.
When are thunderstorms most likely?
Thunderstorms are most likely in the spring and summer months and during the afternoon and evening hours, but they can occur year-round and at all hours.
What kinds of damage can thunderstorms cause?
Many hazardous weather events are associated with thunderstorms. Under the right conditions, rainfall from thunderstorms causes flash flooding, killing more people each year than hurricanes, tornadoes or lightning. Lightning is responsible for many fires around the world each year, and causes fatalities. Hail up to the size of softballs damages cars and windows, and kills livestock caught out in the open. Strong (up to more than 120 mph) straight-line winds associated with thunderstorms knock down trees, power lines and mobile homes. Tornadoes (with winds up to about 300 mph) can destroy all but the best-built man-made structures.
Where are severe thunderstorms most common?
The greatest severe weather threat in the U.S. extends from Texas to southern Minnesota. But, no place in the United States is completely safe from the threat of severe weather.
What is the difference between a Severe Thunderstorm WATCH and a Severe Thunderstorm WARNING?
A Severe Thunderstorm WATCH is issued by the NOAA Storm Prediction Center meteorologists who are watching the weather 24/7 across the entire U.S. for weather conditions that are favorable for severe thunderstorms. A watch can cover parts of a state or several states. Watch and prepare for severe weather and stay tuned to NOAA Weather Radio to know when warnings are issued.
A Severe Thunderstorm WARNING is issued by your local NOAA National Weather Service Forecast Office meteorologists who watch a designated area 24/7 for severe weather that has been reported by spotters or indicated by radar. Warnings mean there i
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My favorite ham gear:
? Sling Shot 4 tree antenna: https://amzn.to/2SRCDZT
? Arborist Throw Box: https://amzn.to/2SSwJr8
? Throw Bag2: https://amzn.to/2BVfNt1
? Tree Antenna Weight: https://amzn.to/2Fvj6dS
Near vertical incidence skywave, or NVIS, is a skywave radio-wave propagation path that provides usable signals in the distances range — usually 0–650 km (0–400 miles). It is used for military and paramilitary communications, broadcasting,[1] especially in the tropics, and by radio amateurs for nearby contacts circumventing line-of-sight barriers. The radio waves travel near-vertically upwards into the ionosphere, where they are refracted back down and can be received within a circular region up to 650 km (400 miles) from the transmitter.[2] If the frequency is too high (that is, above the critical frequency of the ionospheric F layer), refraction fails to occur and if it is too low, absorption in the ionospheric D layer may reduce the signal strength.
There is no fundamental difference between NVIS and conventional skywave propagation; the practical distinction arises solely from different desirable radiation patterns of the antennas (near vertical for NVIS, near horizontal for conventional long-range skywave propagation).
Yaesu FT-891 HF+50Mhz ALL MODE MOBILE TRANSCEIVER
The FT-891 HF All Mode Mobile Transceiver once again continues Yaesu's legacy for legendary receiver design in a compact package, providing uncompromised performance for both the mobile and stationary Amateur operator. High end 32-Bit floating point DSP enhances the operating experience providing a cleaner, clearer signal and reducing overall operator fatigue creating a more enjoyable environment for any Amateur operator.
Uncompromising Receiver Circuit Design Ensures Excellent Performance
• Triple conversion with a 1st IF frequency of 69.450 MHz (SSB/CW/AM
• 3 kHz roofing filter equipped as standard feature
• TCXO provides ±0.5 ppm High frequency stability (-10°C to +50°C)
Stable 100 Watt Output
The FT-891 provides stable 100 Watts (25W AM) of high power output. High reliability is assured by the transmitters careful circuit design with efficient thermostatically-controlled Dual internal fans and the die cast heat transferring chassis.
32-Bit IF DSP Provides effective and optimized QRM rejection
The 32 bit high speed floating Point DSP (max 3000 MIPS) provides effective cancellation/reduction (DNR) of the random noise that is frequently fru
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https://www.youtube.com/watch?v=wq-tpvBczSE
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Shortwave Frequency List:
https://ccrane.com/shortwave-frequency-list/
Emergency Broadcast | DC under Martial Law | Prep Up | Shortwave Radio
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https://www.youtube.com/watch?v=rlND0xSF_5k
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My Favorite Ham Products
Yaesu 891
https://amzn.to/2RLdPVY
Big Shot Sling Shot
https://amzn.to/2SRCDZT
? Yaesu 891 https://amzn.to/2RLdPVY
? MFJ manual tuner https://amzn.to/2WarftS
...
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Yaesu FTDX10
New Yaesu compact HF and 50 MHz 100W SDR Transceiver available in December 2020.
Functionalities of the top line models in a smaller form factor transceiver. FTDX10 is going to utilize the Yaesu Hybrid SDR Configuration.
FTDX10 Price has been announced by Yaesu Dealers in Europe and Canada but not yet in USA since still missing for FCC Approval.
FT DX 10 Features
15 separate band pass filters
Effective QRM rejection with the IF DSP (IF SHIFT/WIDTH, IF NOTCH DNF, DNR, COUNTOUR)
High-quality and super stable final amplifier utilizing the new push-pull MOSFET RD70HUP2
Aluminum Heat Sink with 80mm low-noise axial flow cooling fan
High Speed Automatic Antenna Tuner with a large capacity 100-channel memory
RF & AF Transmit Monitor
Microphone Amplifier with Three-stage parametric Equalizer (SSB/ AM mode)
QMB (Quick Memory Bank)
Band Stack Function
Optional speaker – SP-30 designed for the new FTDX10
Optional roofing filter (300Hz) – XF-130CN available
Hybrid SDR Configuration
Like the FTDX101 series, the new FTDX10 utilizes the Yaesu Hybrid SDR configuration – Narrow Band SDR and Direct Sampling SDR. The Narrow band SDR receiver emphasizes excellent receiver performance, while the Direct Sampling SDR provides a Digital Processing Real-Time Spectrum Scope.
Narrow Band SDR
Narrow Band SDR with 3 types of Roofing Filters and Phenomenal Multi-signal receiving Characteristics
Like the FTDX101 series, the Down Conversion type receiver configuration with the first IF at 9MHz has been adopted. It makes it possible to incorporate excellent narrow bandwidth crystal roofing filters that have the desired sharp “cliff edge” shape factor. Thanks to the Narrow Band SDR with the latest circuit configuration including 500Hz, 3kHz and 12kHz roofing filters and low noise oscillator, the RMDR (Reciprocal Mixing Dynamic Range) reaches 116dB or more, the close-in BDR (Blocking Dynamic Range) reaches 141dB or more, and 3rd IMDR (third-order Intermodulation Dynamic Range) reaches 109dB or more, in the 14MHz band at 2kHz separation.
FT-DX10The New Yaesu FT DX 10 HF / 50 MHz Transceiver
High Resolution Direct Digital Synthesizer
250MHz HRDDS (High Resolution Direct Digital Synthesizer) affords Quiet and Clear Reception
The local circuit of the new FTDX10 uses 250MHz HRDDS method same as the FTDX101 series. Thanks to
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https://www.youtube.com/watch?v=gIAItC7g0CA
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My favorite ham gear:
? Sling Shot 4 tree antenna: https://amzn.to/2SRCDZT
? Arborist Throw Box: https://amzn.to/2SSwJr8
? Throw Bag2: https://amzn.to/2BVfNt1
? Tree Antenna Weight: https://amzn.to/2Fvj6dS
Chapters
00:00 -3:15 Intro New Jeep
3:15-8:38 Drive & Talk Weight Loss
8:38-9:42 Driving South from OKC to Sulpher
9:43-14:16 Chickasaw Vendome Well
14:17-20:59 Cold Water Spring Swimming
21:00-23:22 Lake Ham Radio Scouting
23:23-37:40 Ham Radio CW Lakeside
37:41-40:53 Low Carb MRE
40:53-41:53 Final Plunge 100 degrees!
Near vertical incidence skywave, or NVIS, is a skywave radio-wave propagation path that provides usable signals in the distances range — usually 0–650 km (0–400 miles). It is used for military and paramilitary communications, broadcasting,[1] especially in the tropics, and by radio amateurs for nearby contacts circumventing line-of-sight barriers. The radio waves travel near-vertically upwards into the ionosphere, where they are refracted back down and can be received within a circular region up to 650 km (400 miles) from the transmitter.[2] If the frequency is too high (that is, above the critical frequency of the ionospheric F layer), refraction fails to occur and if it is too low, absorption in the ionospheric D layer may reduce the signal strength.
There is no fundamental difference between NVIS and conventional skywave propagation; the practical distinction arises solely from different desirable radiation patterns of the antennas (near vertical for NVIS, near horizontal for conventional long-range skywave propagation).
Yaesu FT-891 HF+50Mhz ALL MODE MOBILE TRANSCEIVER
The FT-891 HF All Mode Mobile Transceiver once again continues Yaesu's legacy for legendary receiver design in a compact package, providing uncompromised performance for both the mobile and stationary Amateur operator. High end 32-Bit floating point DSP enhances the operating experience providing a cleaner, clearer signal and reducing overall operator fatigue creating a more enjoyable environment for any Amateur operator.
Uncompromising Receiver Circuit Design Ensures Excellent Performance
• Triple conversion with a 1st IF frequency of 69.450 MHz (SSB/CW/AM
• 3 kHz roofing filter equipped as standard feature
• TCXO provides ±0.5 ppm High frequency stability (-10°C to +50°C)
Stable 100 Watt Output
The FT-891 provides stable 100 Watts (25W AM) of high power output. High reliability is assured by the transmitters careful circuit design with efficient thermostatically-controlled Dual internal fans and the die cast heat transferring chassis.
...
https://www.youtube.com/watch?v=Owa4Z_59VGs
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Jeep Antenna Mount for Ham & CB Radios & Coax Cable Connector
CB Antenna Mount has 15FT(4.5 Meter) Coax RG58A/U Cable.
CB Antenna Sutd to PL-259 connector
CB Antenna Stud mount hardware made by heavy duty Chrome-plated Brass
Accepts Ham and CB Two Way Radio Antennas with Standard 3/8"x24 Thread Connector.
EAG Spare tire Antenna Bracket Flag Mount Bracket Black Steel Compatible for 18-21 Wrangler JL
EAG spare tire antenna mount bracket / flag mount bracket compatible with wrangler JL models 2018 2019 2020 2021
Manufactured with black powder coated 3mm thick steel.
Simple bolt-on installation. Remove the original tire carrier and place the antenna wire into the vehicle. Then connect the wire and tighten up the bracket with original screws by simple handtools.
This mount worked perfectly and hides behind your tire well.
Package included: a pair of EAG wrangler JL antenna mount bracket.
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https://www.youtube.com/watch?v=AdNsu3vWjhA