Skip to content
  • Patreon Founding Members
  • Last 10 QSOs
  • For Sale
  • About
  • Twitter
  • YouTube
  • Etherkit GitHub
  • Personal GitHub
  • Blog RSS Feed

Ripples in the Ether

Emanations from Amateur Radio Station NT7S

Tag: amplifier

Dual Gate MOSFET Investigations – Intermodulation

A look into the intermod properties of a BF991 amplifier.… Read More Dual Gate MOSFET Investigations – Intermodulation

4 December 2014 Jason Milldrum2 Comments

Homebrew 20 Watt Linear Amp

QRP is tons of fun on CW, but it gets a bit rough trying to work other stations on SSB with 5W, especially when you are using antennas that are low to the ground. I had been eyeballing the nice RF MOSFETs from Mitsubishi for a while, and since I got a hankering to get… Read More Homebrew 20 Watt Linear Amp

21 June 2009 Jason Milldrum1 Comment

W8DIZ 5 Watt CW Amplifier Analysis

I finally got the proper binocular ferrite cores that I needed to build the W8DIZ 5 watt amp correctly. You can see my previous post on this amplifier here. In my last post, I noted that I was seeing some strangeness in the drive level circuitry. I found that I had a very bad connection… Read More W8DIZ 5 Watt CW Amplifier Analysis

12 December 200822 October 2010 Jason Milldrum3 Comments

W8DIZ 5 Watt CW Amplifier

A few days ago, W8DIZ made a post on qrp-l.org announcing a new addition to his RF Toolkits line. This one is a 5 watt CW amplifier using a push-pull 2SC5739 pair as the PA (my new favorite full QRP gallon transistor). I built my own version of the circuit using parts that I had… Read More W8DIZ 5 Watt CW Amplifier

7 December 2008 Jason Milldrum1 Comment

Dual Gate MOSFET Investigations – Gain and AGC

Having determined some basic characteristics of the biasing of the BF998 dual gate MOSFET in a previous experiment, it was now time to look into the gain and AGC performance of the amplifier. A few changes were made to the original circuit to turn it into a proper RF amplifier. Test Equipment Power Meter: M3… Read More Dual Gate MOSFET Investigations – Gain and AGC

9 July 20089 July 2008 Jason Milldrum6 Comments

Search

About This Blog/Bio

You've arrived at the blog of Jason Milldrum, NT7S. It's mostly related to amateur radio (especially homebrewing and QRP) but occasionally other topics will pop up when they strike me as amusing. The QTH is in Oregon wine country. Husband of Jennifer, dad of Noah and Eli. Butler to a pair of cats and a rescue Beagle.

Applied Etherics Substack

Home of my new community learning project

I Support the DX Code of Conduct

QRP Homebuilder Archive

Download the QRP/SWL Homebuilder PDF Archive

Subscribe to Ripples in the Ether via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Tags

AA7EE amplifier antenna arduino avr cc-20 cc-series CC1 clackamas CRX1 cw dayton DSA815-TG Empyrean etherkit fdim fieldday GitHub homebrew KK7DS linux loldog manhattan mosfet OpenBeacon OpenBeacon Mini projectx Python QRP QRSS Raspberry Pi Rigol si5351 Si5351A skcc sota ssb Twitch ubuntu VE7BPO VRX-1 W7ZOI W8NF willamette wspr

Categories

  • 3D Printing
  • Antennas
  • Blazers
  • Coding
  • Computing
  • Cooking
  • Cool Stuff
  • Dayton 2010
  • Dayton 2012
  • Design
  • DX
  • Etherkit
    • Empyrean
    • OpenBeacon 2
  • FPGA
  • Ham Culture
  • Homebrewing
  • Meta
  • Microcontrollers
    • Arduino
    • Empyrean
  • Operating
    • POTA
    • SOTA
  • PCs
  • QRP
    • CC-Series
    • Clackamas Transceiver
    • OpenBeacon
    • Project Yamhill
    • VRX-1
    • Willamette Transceiver
  • Random Musings
  • Sanctimonious Preaching
  • Test and Measurement
  • Test Equipment
  • Twitch
  • Uncategorized
  • Wideband Transmission

Meta

  • Log in
  • Entries feed
  • Comments feed
  • WordPress.org

Blogroll

  • Alan Yates’ Laboratory
  • Are We There Yet?
  • Brainwagon
  • Chris Gammell's Analog Life
  • Cloud Warmer
  • danplanet.com
  • Dave Richards AA7EE
  • Ham Hijinks
  • Hoaglun's Rant & Useless Info
  • K4UPG.COM – Adventures in QRP Portable Ops!
  • KA3DRR RadioSport
  • KB6NU’s Ham Radio Blog
  • KB9BVN
  • KF4LMT
  • KIX-Online
  • KJ6AKQ Blog
  • KO7M – Ham Radio Blog
  • M1KTA's QRP ham radio blog
  • N1FIY's Radio Adventures
  • N7UN Adventures and Ham Radio Activities
  • Popcorn QRP
  • Radio & Photography de AE5X
  • SolderSmoke News
  • The 147.120 Tech Net Blog
  • The Adventures of Rooster and Peanut with Steve WG0AT
  • The K3NG Report
  • VA3STL's Weblog
  • VE7SL – Steve – Amateur Radio Blog
  • W0EA Blog!
  • W2LJ's Blog – QRP – Do More With Less
  • W5PG's Blog
  • WA0UWH – HAM Radio Blog
  • WB8ICN's Blog
  • WF7T – Amateur Radio Station
  • WW2PT Amateur & Shortwave Radio

Podcasts

  • Linux in the Ham Shack
  • Practical Amateur Radio Podcast
  • SolderSmoke
  • The Amp Hour
Proudly powered by WordPress | Theme: Cerauno by Automattic.
 

Loading Comments...