Homebrew

• W8EDU's QRP project collection, which even includes NH6IL's two transistor 2 meter CW transmitter and lots of HF projects.
• QRP Hints & Kinks from the Internet QRP Club.

Manufacturers

• Down East Microwave Inc. has an on-line Price list and Product Summary and more coming.

Beacons

• Beacons, 50MHz, World-Wide
• Beacons, 144MHz & up, N. American [Mostly East Coast]

Various USENET postings

• Alkaline vs. Nicad operating time?
• Microwave oven transmitters, is it fact or an urban legend? According to KA0VYB, there is an article in 73 Magazine. [What do you think? KD6PAG]
• What is a T1 channel (and other such questions)?
• <Wireless LANs (commercial suppliers, via Part 15 [ca. 1993])
• '10' codes used by dispatchers and others.
• Excellent discussion on the importance of grounding.
• FEMA frequencies
• Stolen equipment pageIf someone steals your radio, e-mail the details of the theft to Mark Saunders, KJ7BS. Mark offers a free service to help hams whose gear has been lost or stolen.
• With ARRL support, the Tucson Amateur Packet Radio Corporation (TAPR) now will provide information on digital systems that formerly appeared in the annual ARRL Repeater Directory. The digital directory information will be available at http://www.tapr.org/directory. By not including digital system listings in the 1997-98 edition of the Repeater Directory, the publication can better focus on its primary use as a guide to voice repeaters for traveling amateurs.

Homebrew topics

• John Woods <[email protected]> contributed a 'C' program for designing coils based on "Accurate Single-Layer-Solenoid Inductance Calculations" by Hank Meyer, W6GGV, from QST magazine (April 1992).

• More on making homebrew coils...
• Rules regarding modifying type accepted equipment, include amateur radio gear.
• Quick summary of tuning 2m duplexers
• Comments on SCA decoding from FM broadcast stations.
• A source for conduction spray
• Information on surplus VHF/UHF rigs.
• Discussion of power amplifiers for VHF.
• An extended discussion about using phasing techniques for single-sideband.
• A few collected notes on 10 GHz hacking.
• Notes on GMSK>. One such commercial implementation is YDI 564[n.b. ignore obviously spurious references to 9.6Kbps in documentation] runs 56Kbps/64Kbps in 100 KHz 900 MHz channel. ("This model available for export only", albeit a licensed amateur could operate it at this power level if (s)he could afford the 2.5K$ price tag. Another version is the YDI GSK-nn(where nn> corresponds to the bit rate) which claims to be compatible with NBFM radios, but not prices are given.)
• There is a paper on simulation of GSM System which utilizes GMSK.

Ham related programming

• AX.25 Protocol (Version 2)
• NETROM protocol (postscript file) and IP extension of NETROM.

• "Internet Protocol Encapsulation of AX.25 Frames" is defined by RFC1226, but that only tells you how to encapsulate, not how to process these the packets.

• Information about TNOS

• "`ecc' is a Reed-Solomon error correction checking program, which can correct three byte errors in a block of 255 bytes and detect more severe errors. Contact `[email protected]' [Paul Flaherty - N9FZX] for more information." This is freely distributable, available from another of places, such as ftp://prep.ai.mit.edu/pub/gnu/ecc-1.2.1.tar.gz, and might be of interest to packet experimenters

© Copyright KD6PAG, 1995-1997. In absence of other copyrights, all rights reserved for original authors and all commercial rights reserved.

These pages have been referenced times since 22 July 1997. The generousity of qsl.net< in providing space and computation resources for these pages is gratefully appreciated.