Drake TR-4C

The Drake TR-4C is an HF amateur band transceiver covering 80 through 10 meters (some sources say 160-10 m) in seven 600 kHz ranges. Modes include USB, LSB, CW and AM. Input power is 300 watts PEP SSB, 260 watts AM/SSB. The accurate VFO provides 1 kHz analog dial. VOX or PTT may be selected. Other refinements include: CW side tone oscillator, crystal calibrator, VFO indicator light, CW semi break-in, VOX or PTT for AM or SSB, heavy irritated cadmium plated chassis, separate USB and LSB filters and 1.7:1 filter shape factor. The right panel has various jacks including: headphones, mic and key.

 General characteristics

HAM bands
80m  40m  20m  15m  10m
Frequency stability
Overall drift after warm-up: less than 100 Hz

 Receiver

RX-range
80-10 m (no WARC)
Modulations
AM   CW   USB   LSB 
Sensitivity
<0,5 µV (10 dB S+N/N)
Selectivity
2.1 kHz (-6 dB)
3.6 kHz (-60 dB)
Receiver system
IF-frequencies
1st: 9 MHz
Image rejection
> 60 dB

 Transmitter

TX-range
80-10 m (no WARC)
Modulations
AM   CW   USB   LSB 
RF-output
SSB: 300 W PEP, AM: 260 W PEP (both input)

Ham Radio University 2021 Presentations

Ham Radio University {HRU}  are now on line you can see their 14 informational presentations by local experts in a broad range of Amateur Radio activities including: Amateur Radio Emergency Communications; Basics of HF Operating; Communicating Through Amateur Radio Earth Satellites; Remote Station Operating Over the Internet; Software Defined Radios; HF and UHF Digital Communications; and Using RaspberryPi Computers in Amateur Radio.

You can find there there presentations from Jan 9th listed below.
You-Tube Videos: https://www.youtube.com/c/HamRadioUniversityNLI
Presentations Papers: http://hamradiouniversity.org/past-presentations/  

Check out their homepage: http://hamradiouniversity.org/

Social Meeting Talk – SETI @ Home

In case you missed the talk from last night social meeting here is the recording. We thank Dr David Anderson for giving a great talk about SETI @ Home.


The UC Berkeley SETI team has discovered that there are already thousands of computers that might be available for use. Most of these computers sit around most of the time with toasters flying across their screens accomplishing absolutely nothing and wasting electricity to boot. This is where SETI@home (and you!) come into the picture. The SETI@home project hopes to convince you to allow us to borrow your computer when you aren’t using it and to help us “…search out new life and new civilizations.”

Zoom Meeting – The Ultimate DX Contact

Seti @ Home-This Wednesday Night Zoom Meeting
This Wednesday Jan 13th @ 7:30PM

On Wednesday Jan 13th the Steel City ARC will be hosting an educational Zoom meeting at 7:30 PM.  We have a very special speaker this week from Seti@Home a member of the Search for Extraterrestrial Intelligence team Dr David Anderson who created software that uses your computer screen saver to search for signals from other  worlds.  Below you will find a better description on how the screen saver works and a link to their site so you can try it out.   If you or your club is interested in joining the Zoom meeting send an email to me and I will add you to the meeting link.  N3LRG (at) W3KWH {dit} COM


The UC Berkeley SETI team has discovered that there are already thousands of computers that might be available for use. Most of these computers sit around most of the time with toasters flying across their screens accomplishing absolutely nothing and wasting electricity to boot. This is where SETI@home (and you!) come into the picture. The SETI@home project hopes to convince you to allow us to borrow your computer when you aren’t using it and to help us “…search out new life and new civilizations.” We’ll do this with a screen saver that can go get a chunk of data from us over the internet, analyze that data, and then report the results back to us. When you need your computer back, our screen saver instantly gets out of the way and only continues it’s analysis when you are finished with your work.

For more information & software: https://setiathome.berkeley.edu/

Dr. David P. Anderson,
Scientist and software architect

David is a computer scientist, with research interests in volunteer computing, distributed systems, and real-time systems. He co-founded SETI@home and directed it from 1998 to 2015. He leads the BOINC project, and is leading Nebula, the back-end data analysis phase of SETI@home.  David is a rock climber, mountain climber, classical pianist,

 

ARRL STRAIGHT KEY NIGHT

Straight Key Night is held every January 1 from 0000 UTC through 2359 UTC.

The J38 CW key has a vast and wonderful history behind it. The J38 key was used by all branches of the U.S. military. The J38 key was produced by numerous manufacturers in very large numbers during the 1940’s and later.

Learn Morse Code with VBand

This project was created by two friends who wanted to (re)learn CW, but didn’t regularly have great propagation between them to practice, and were a bit embarrassed to get on the air at their current skill level. While it allows code to be sent with a keyboard as either a paddle or straight key, it really shines using the USB paddle interface below.

The goal was to make a fun way to practice sending and receiving CW with a buddy, without worrying about a radio, an antenna, a license, good propagation, or RF noise.

Try it out: https://hamradio.solutions/vband/

The USB paddle interface allows sending with an actual paddle or straight key instead of the computer keyboard. The adapter connects to a computer with a USB cable, and has a 3.5mm TRS jack for the paddle / straight key connection.

Paddle Or Straight Key USB Adapter

Installing Fldigi Help Page

Fldigi is a computer program intended for Amateur Radio Digital Modes operation using a PC (Personal Computer). Fldigi operates (as does most similar software) in conjunction with a conventional HF SSB radio transceiver, and uses the PC sound card as the main means of input from the radio, and output to the radio. These are audio-frequency signals. The software also controls the radio by means of another connection, typically a serial port.

Fldigi is multi-mode, which means that it is able to operate many popular digital modes without switching programs, so you only have one program to learn. Fldigi includes all the popular modes, such as DominoEX, MFSK16, PSK31, and RTTY.

Have trouble with installing and operating Fldigi?  The CAT interface wont work? Follow the link below to an help page that will teach you how to install the software on some popular modem HDF radios.

Fldigi Help Page:  https://sourceforge.net/p/fldigi/wiki/how_to/

SPACE WEATHER

Band conditions have been good with solar flux index over 100. In the early morning 6am or so 10 meters open into South Africa and 15 meters into Asia and the EU and 40 into South Pacific.

FEMA – Telecommunications Operator Reservists

The Federal Emergency Management Agency (FEMA) is seeking telecommunications operator reservists to assist in emergency recovery efforts on an intermittent, on-call basis. The deadline to apply is December 8, but FEMA will not take any applications beyond the first 200, which may come sooner than that.

These FEMA reservist positions seem well suited to radio amateurs. Duties include sending, receiving, and distributing HF radio messages between first responders using the phonetic alphabet, Morse code, call signs, continuous wave, and proper frequencies based on network requirements, as well as setting up, establishing, and maintaining an HF radio site in an austere environment and performing site analysis to determine an optimal location.

Among other requirements, candidates should have an understanding of radio wave propagation for day, night, and transitional period frequency use, and be able to maintain station message logs and compile communication reports.

The Reservist Program is an appointment type granted under the Robert T. Stafford Disaster Relief and Emergency Assistance Act, Section 306(b), which authorizes FEMA to appoint such temporary employees as necessary to accomplish work authorized under the Act. See the position description on the USAJobs website for complete information.

From: http://www.arrl.org/news/fema-seeking-reserve-telecommunications-operators