Index of /Radios & RF Circuitry/Communications
Logged in as: Guest
guest id: 340828
Bandwidth:0.140mb used 499.860mb left
Files:4 used 96 left
Limits reset:Feb 21 19:18 Login

Please help us keep the site running.
Inspire me

This isn't my website, it really belongs to the community.
Your opinion matters and is always given consideration.
(optional, leave empty to be anonymous)
Please don't use this to request a file

Still online, we are. The code for this website is getting old, but still works well as far as I've seen. I may update it with new code and new features eventually, one day when I have both free time and focus. Until then, the content is still useful, I'm keeping it online. Comments and donations are welcome, but include your email address if you want a reply.

Ideas for the future of the site -
Here are some ideas I've been brainstorming. I don't think to much of the site should change, because it has been successful all these years with very little change. still nearly 1000 visitors a day to the site!
  • donations - I think it might be time to make some changes to the donations. I would rather see people get a lifetime membership and not have to worry about an expire date. here's an idea, a smaller recurring payment monthly, or 4 times a year, then maybe offer a second option, donate enough to cover the cost of the server for one month and you'll get a lifetime membership that never expires.
  • automated account creation - the membership process should be automated. I rarely hear a complaint about anything, but I don't think people feel so safe emailing me a username and password to set up an account. I think people may feel more safe dealing with an automated system. make a donation, then type your account into right in to the computer and have it set up on the spot.
  • members only forum - the site doesn't seem to need a full forum, but it could still benefit from a single simple board or mailing list, maybe. still optional, but maybe only available to members. non-members wouldn't be able to post on or see the forum. for those who donate to openly communicate.
You can send me your comments in the form above. I'm not putting any work into these changes without getting feedback from you!
If we have any web developers out there, we'd love your help! come on, my birthday's tomorrow!

Better forum? -
We are currently using vbulletin, but maybe there's a simpler alternative that would better fit the site. What do you think of this one? Please let us know what you think, keep vBulletin, or switch to SEO. Comment box is below.

ideas or comments?
please send us your comments or suggestions or any ideas you might have for the site. this is the easiest way for you to let us know what you think. just type in the box above and send.

Thank you, everyone who has helped support the site over the years. you've done your part, now help me do my part to improve the site with your input.

tips to download -
right click on the file you want and save target as/save link as. this will help prevent the system from double counting the bandwidth.
The bandwidth reset time is now set to 20 hours instead of a week. We hope this helps you get what you need without causing any problems with the site.

new server -
this week, we've moved the website to a bigger faster server. we have doubled the weekly download limit to 20mb and are now allowing hot-linking, so more people can get the documents they're looking for. this new server is still relatively low cost, but is a bit more to pay for each month then the last server. we still need your donations to help with this. thank you all who have supported the site and community!!!

upload files - If you have files you'd like to add to the site, we'd love to add them. Please don't upload anything illegal, harmful, or copyrighted. We will do our best to screen the files and put them online.

<-- Old News -->

[To Parent Directory]

Last Accessed Size  File
02-20-19 78266  Audio Quadrature Filter for SSB Modulation.pdf
02-20-19 1140510  Below 500 KHz.pdf
02-20-19 24482  CB Radio Call Light.pdf
02-20-19 421154  Communication Theory - Part 3 The Digital Revolution.pdf
02-20-19 432921  Communication Theory Part 1.pdf
02-20-19 393934  Communication Theory Part 2.pdf
02-20-19 858038  Communications and High Speed Railways.pdf
02-20-19 364322  Computer CB Scanner.pdf
02-20-19 230892  DXing NASA.pdf
02-20-19 121553  Find SWRs Graphically.pdf
02-20-19 721585  General Coverage Communications Receiver with Digital Frequency Readout.pdf
02-20-19 157990  LEDs Help Tune FSK Demodulators.pdf
02-20-19 1824873  Military Communication - The Chaos Factor.pdf
02-20-19 63239  Mobile Phone Abbreviations.pdf
02-20-19 516209  Mobile Radio Communications Part 3.pdf
02-20-19 40641  Morse A Word Part 1 Errata.pdf
02-20-19 343441  Radio Reception Developments.pdf
02-20-19 125806  Recreating Sound.pdf
02-20-19 686952  Remote Security Communicator.pdf
02-20-19 687317  Single Sideband Primer.pdf
02-20-19 507323  Spread Spectrum Communications.pdf
02-20-19 224344  Steel Tubes and Water Droplets.pdf
02-20-19 367700  Synchronous Detection In Radio Recepption Part 1.pdf
02-20-19 352619  Synchronous Detection In Radio Recepption Part 2.pdf
02-20-19 855412  The Future of Medium and Long Wave Broadcasting.pdf
02-20-19 361987  The Phase Sensitive Detector.pdf
02-20-19 303840  VLF and the Magnetosphere.pdf
02-20-19 2264547  Voice Scramblers.pdf
02-20-19 284336  Wireless Across Space Part 2.pdf
02-20-19 616565  Wireless Across Space.pdf

Note: if you use any type of downloader or download accelerator it may
more then double your file and bandwidth usage credits.

Indexer 1.1 by Mattsoft © 2004
Please report any problems to