Category Archives: Antennas

Antennas

Online Store

Online Store is live, Purchase your Hamfest / Builders Fest tickets now. Click now to go to the Store or look for the Tab on the Menus

Special Grand Prize this Year.
Yaesu 991a Hf vhf/uhf radio!

 

 

uBitx radio kit

www.morristownhamfest.com

Buy It Now!

The uBITX is a general coverage HF SSB/CW transceiver kit with features you NEED for operating ease, convenience and versatility. If works from 3 MHz to 30 MHz, with upto 12 watts on SSB and CW with a very sensitive receiver. It features digital tuning, dual VFOs, RIT, CW Keyer and more.  The uBITX is a general coverage HF SSB/CW transceiver kit with features you NEED for operating ease, convenience and versatility. It works from 3 MHz to 30 MHz, with upto 12 watts on SSB and CW with a very sensitive receiver. It features digital tuning, dual VFOs, RIT, CW Keyer and more.

Operating

The uBITX is a joy to operate. Press the tuning control to access all the features. Dual VFOs, RIT, CW speed, sideband selection. etc. are all accessible from a single menu. The transceiver automatically selects the proper sideband for you (you can override it too).

Technical Specifications

The uBITX is an understandable radio. The complexity is kept to a minimum so you can always repair and make changes if you so desire.

The the uBITX has a carefully thought out operator interface. The tuning knob features a number of menu options on a click. From RIT, to dual VFOs, to the keyer and many more featuers are all accessible from the tuning knob by simply tapping on it.There are intelligent defaults everywhere (these are easily overriden). Example : below 10 MHz, it auto-selects LSB and vice versa. To operate CW, you just press the morse key.

Architecture The uBITX uses upconversion to the first IF of 45 MHz. This eliminates the need for a large number of band pass filters, keeping the design simple and virtually image free. The roofing filter at 45 MHz is 15 KHz wide. The signal is then down-converted to 12 MHz where a low ripple SSB filter with 8 crystals is used to provide a sparkling audio.

The transmitter has push-pull PA using two IRF510s for a clean output. The low cost IRF510s are not  a bother to replace should you ever blow them up.

Receiver :

  • Sensitivity a 0.2uv signal is clearly audible
  • Selectivity 2.4 KHz,  low ripple SSB filter with 8 crystals
  • RIT (Receiver Incremental Tuning)
  • Continuous coverage from 500 KHz to 30 MHz
  • Sideband selection
  • Dent-less encoder tuning. Tunes with larger step rates when tuned quickly

Transmitter

  • More than 10 watts upto 10 MHz, 7 watts upto 21 MHz, 2 watts on 28 MHz
  • CW transmit with the built-in keyer
  • Uses   IRF510s  x 2 as PA and  2N3904 x 4 drivers in push-pull mode for low distortion transmission. Blown IRF510 are inexpensive to replace

Raduino Features

This is a small board with an Si5351 clock generator, an Arduino Nano and a 16×2 LCD display. It plugs into the main radio board. The software that controls the radio is written in Arduino’s C langauge.

All the features are available implemented in Raduino software. The menus are accessible by pushing the button on the tuning encoder. You can add more features by hacking through the open source code available on https://github.com/afarhan/ubitx

  • Dual VFOs
  • RIT
  • Manual override of LSB/USB selection
  • CW Keyer Speed and tone selection

µBITX

CountDown to something great

There is something behind that STOP sign, and at 1pm today it will be removed. Get Ready

www.morristownhamfest.com

 

Lakeway Amateur Radio Club Builders Group
The purpose of this group is to foster and accommodate the art of DIY in Ham Radio. The group is available to new and experienced hams in the Lakeway Area in East Tennessee. Projects vary from simple antenna construction to projects using
microprocessors such as the PIC and Arduino.

Understanding Repeater Antennas Part 2

Mr. W4KEV,  Kevin Duplantis will be the guest speaker and will present a program for Lakeway members and visitors at the L.A.R.C. meeting this month on Thursday Oct. 26th, 2017 at the Youth Building First Baptist Church, Morristown, TN.

Meeting starts at 7:00 PM be there early to get your seat!

        

September Meeting Program

Come join us for an interesting program at our September’s meeting at the Jefferson City Library. September 28th, 2017.

WSPRNET 

we’ll be covering details of equipment used, software, antennas, computers, why it’s helpful, ways to use it! Get ready for another tools to use with Amateur Radio

WSPR (pronounced “whisper”) stands for “Weak Signal Propagation Reporter”. It is a computer program used for weak-signal radio communication between amateur radio operators. The program was initially written by Joe Taylor, K1JT, but is now open source and is developed by a small team. The program is designed for sending and receiving low-power transmissions to test propagation paths on the MF and HF bands.

WSPR implements a protocol designed for probing potential propagation paths with low-power transmissions. Transmissions carry a station’s callsign, Maidenhead grid locator, and transmitter power in dBm. The program can decode signals with S/N as low as -28 dB in a 2500 Hz bandwidth. Stations with internet access can automatically upload their reception reports to a central database called WSPRnet, which includes a mapping facility.

Sun Unleashes Monster Solar Flare, Strongest in a Decade

Thanks to Dan W4DOD for the info below.
The Tennessee Phone Net on 3980 was wiped out this morning by this solar event.
Dan
W4DOD

Early this morning (Sept. 6), the sun released two powerful solar flares — the second was the most powerful in more than a decade.

At 5:10 a.m. EDT (0910 GMT), an X-class solar flare — the most powerful sun-storm category — blasted from a large sunspot on the sun’s surface. That flare was the strongest since 2015, at X2.2, but it was dwarfed just 3 hours later, at 8:02 a.m. EDT (1202 GMT), by an X9.3 flare, according to the National Oceanic and Atmospheric Administration’s Space Weather Prediction Center (SWPC). The last X9 flare occurred in 2006 (coming in at X9.0).

According to SWPC, the flares resulted in radio blackouts: high-frequency radio experienced a “wide area of blackouts, loss of contact for up to an hour over [the] sunlit side of Earth,” and low frequency communication, used in navigation, was degraded for an hour. [The Sun’s Wrath: Worst Solar Storms in History]

Read More at the Link below

EclipseMob Radio – Builders Group

This Saturday August 19, see you there!

26th Annual “ Walk to Remember”

LARC will be participating in this event by providing communications assistance to event sponsors. More info to follow.

When: JULY 22:
What:
Alps  26th Annual “ Walk to Remember”

(Walk Registration)  

Build a team or walk as an individual. All money you raise stays in Morristown, providing affordable adult day care for Lakeway residents and caregiving support for their families.

Tomato Festival

25th Anniversary
Grainger County Tomato Festival TN.
July 28, 29, & 30 2017
Hours: Friday 28 noon to 8pm
Saturday 29 9am to 6pm
Sunday 30 noon to 5pm
​Grainger County Tomato Festival
​7480 Rutledge Pike
Rutledge Tn 37861

PicturePainting by Wendy Leedy

The Grainger County Tomato Festival was organized in 1992 to promote our world famous Grainger County Tomatoes. Our mission is to promote all Grainger County agricultural products, specifically the Grainger County Tomato, and to promote the many local artists, authors, talent, and craftsmen we have in our area. Over the years we have added a number of special events making the festival one of the largest free festivals in East Tennessee and has been named by Parade magazine as one of the top ten festivals in the USA.
The festival is always the last full weekend in July in Rutledge,Tennessee. Be sure to mark your calendars! You don’t want to miss it.
For more info check out their website at: