Skip to content

Rob's Blog

Hobbies, Family, Fun & More

  • Home
  • Useful Docs
    • Bandpass Filters
    • Biasing Circuits for RF Devices
    • Capacitor Codes
    • Hycas IF Amp
    • RF Mixers
    • RF Switches
    • Termination Insensitive Amp
    • IARU Regions Map
    • CQ Zones Map
    • ITU Zones Map
  • Books
    • Crystal Sets to Sideband
      • Forward
      • Table of Contents
      • Chapter 1
      • Chapter 2
      • Chapter 3
      • Chapter 4
      • Chapter 5
      • Chapter 6
      • Chapter 7
      • Chapter 8
      • Chapter 9
      • Chapter 10
      • Chapter 11
      • Chapter 12
      • Chapter 13
      • Chapter 14
      • Chapter 15
      • Chapter 16
    • Lessons In Electronic Circuits
      • Volume 1
      • Volume 2
      • Volume 3
      • Volume 4
      • Volume 5
      • Volume 6
    • Radio Hobbiest Design Book
      • Part 1
      • Part 2
      • Part 3
      • Part 4
      • Part 5
  • Projects
    • VK4HAT Project Files
    • VK4FFAB Arduino Logger
  • Logs
    • VK4FFAB Online Log
    • VK4HAT Online Log
    • RBN STATS
  • LT Spice for Radio Amateurs
    • LT Spice For Radio Amateurs: PT1
    • LT Spice For Radio Amateurs: PT2
    • LT Spice For Radio Amateurs: PT3
    • LT Spice For Radio Amateurs: PT4
    • LT Spice For Radio Amateurs: PT5
    • LT Spice For Radio Amateurs: PT6
    • LT Spice For Radio Amateurs: PT7
  • Software
    • AADE Filter Designer
    • Crystal Ladder Filters DISHAL
    • RF Sim 99 Filter Designer
    • Coil Calculator
    • Diplexer Calculator
    • Double Tuned Bandpass Filter

Day: 31 March 2018

Radio Fundamentals: Broadcast Highpass Filter

Broadcast Reject, High Pass Filter.

Schematic.

Project built, into plastic project box.

612 ABC, 50kW AM Station 10km away from me, Before:

612 ABC After.

10mhz band spread before.

10mhz band spread after.

Facebooktwitterredditpinterestlinkedin
Posted on March 31, 2018 by Rob PowellPosted in Radio FundamentalsLeave a comment

Radio Fundamentals: TX-RX Switching

Transmit Receive switching.

Facebooktwitterredditpinterestlinkedin
Posted on March 31, 2018 by Rob PowellPosted in Radio FundamentalsLeave a comment

Join 50 other subscribers.
March 2018
M T W T F S S
 1234
567891011
12131415161718
19202122232425
262728293031  
« Feb   Apr »
  1. Rob Powell on An SWR ThingyDecember 5, 2023

    Its my own work, but I stopped sharing my board designs because of the abuse I was getting for not…

  2. Randy VE3YRG on An SWR ThingyDecember 3, 2023

    Do you have a link to the board, manufacturer etc?

  3. Rob Powell on An SWR ThingyNovember 12, 2023

    While technically 2 transformers in this case Gerry, it does not have to be and the whole process can be…

  4. Gerry Kavanagh on An SWR ThingyNovember 10, 2023

    It's really 2 transformers though. One on the output, sampling the forward power and one on the input, sampling the…

  5. Rob Powell on SWL Report From GeorgiaNovember 6, 2023

    Yeah Lou, its a well designed card and to do that he had to sign up for a membership at…

Log in
Robs Blog Copyright 2019 Theme: Colinear by Automattic.