af4k.com

tetrode.co.uk

Links

http://tetrode.co.uk/links.html

In no particular order. Old / homebrew computing. Marvelous home computer built from scratch (including the CPU which uses 200 TTL chips). Includes flashing lights! Link to an PDF article entitled "MCPU - A Minimal 8Bit CPU in a 32 Macrocell CLPD". Possibly the simplest CPU imaginable. Link to an page entitled "A Minimal TTL Processor for Architecture Exploration". Some designs are described for "Pathetic Instruction Set CPUs" which could be made fairly functional with a little more work. This site has a...

9a2us.com

9a2us

http://www.9a2us.com/prc515.htm

Army radio mods Mirko S52PC :. Http:/ www.combatradio.org.uk/index.htm. And my good friend Dino. In Afganistan mission UN ( Kabul ). Handzic Edin - Dino, Radio Technician UNOCA Complex, Jalalabad Road, Industrial Zone, Kabul, AFGHANISTAN. I moj također dobar prijatelj , školski kolega , s kojim sam zajedno naganjao cure po Sisku i kafićima ( Grill ) . Šprišić Zdenko koji se nakon što je obišao pola svijeta trenutno nalazi u misiji HV-a u Afganistanu također u Kabulu. Zakonski propisi za radio amatere :.

makerf.com

makeRF: Where to Locate Hard to Find RF Electronic Components

http://makerf.com/posts/where_to_locate_hard_to_find_rf_electronic_components

Don't buy a radio; Build one! Where to Locate Hard to Find RF Electronic Components. We have all been there. You found a great schematic for a circuit you want to build. The only problem is that you are missing a few essential parts. This is doubly a problem for RF circuits, as many schematics reference parts that haven't been manufactured for decades, and other parts critical to all RF circuits are difficult to track down. This is a living post, that I will update over time, and I welcome your input.

q5letterpress.blogspot.com

All Things Wireless & Letterpress: The "Mini Band Master".

http://q5letterpress.blogspot.com/2015/04/the-mini-band-master.html

All Things Wireless and Letterpress. All Things Wireless and Letterpress. Wednesday, April 1, 2015. The "Mini Band Master". Many an excited Novice Class license holder used these transmitters, and a fair share of seasoned vets as well. Many are still on the air today! Mostly doing code work. They required an external power supply, and some models came with a VFO, or Variable Frequency Oscillator, expanding the versatility of these black wrinkle-finished boxes. Were they a "great" transmitter? Building a ...

q5letterpress.blogspot.com

All Things Wireless & Letterpress: QSL Cards

http://q5letterpress.blogspot.com/2013/11/qsl-cards.html

All Things Wireless and Letterpress. All Things Wireless and Letterpress. Tuesday, November 26, 2013. I've always been a collector. It started with collecting coins. There was an ad on the back page of comic books back in the early sixties featuring an 1804 silver dollar. It read something to the effect : "If you find this coin, it's worth $25,000"! Needless to say: was I turned on to collecting coins. Maybe too. You see this stamp Gary? People COLLECT these things! It's called ' Stamp Collecting. In tim...

q5letterpress.blogspot.com

All Things Wireless & Letterpress: Update: The "Mini Bandmaster"

http://q5letterpress.blogspot.com/2015/04/update-mini-bandmaster.html

All Things Wireless and Letterpress. All Things Wireless and Letterpress. Thursday, April 30, 2015. Update: The "Mini Bandmaster". I suppose the first thing I should write about is the blue transformer. Many of you who build audio equipment will recognise it immediately as a power transformer from Edcor. Part of the problem, but only a part. I will explain. One of the unique features of this circuit was the oscillator output to the 6V6 final. The author of the original article has the builder utilisi...

q5letterpress.blogspot.com

All Things Wireless & Letterpress: January 2015

http://q5letterpress.blogspot.com/2015_01_01_archive.html

All Things Wireless and Letterpress. All Things Wireless and Letterpress. Sunday, January 11, 2015. Replacing the HTX-252 Mic Cord. If you purchased a Radio Shack HTX-252 sometime 2004 or 5, you've had it for some time. You probably already know about the disintegrating microphone cord. Wow, and it is a thorough disintegration, too! I don't think I have seen any piece of apparatus fly to pieces quite like this cord! And this rig was stored in a climate controlled environment! This presents a problem beca...

q5letterpress.blogspot.com

All Things Wireless & Letterpress: June 2015

http://q5letterpress.blogspot.com/2015_06_01_archive.html

All Things Wireless and Letterpress. All Things Wireless and Letterpress. Saturday, June 13, 2015. Operation QSL" : Letterpress QSL Cards for the Vintage Station. I am amazed at the multiple thousands of vintage radio dollars which are exchanged daily either over or via eBay or Craigs List or at Hamfests or via the various News groups, FaceBook pages and Pinterest! I already waxed lyrical over the art and tradition of the QSL card in a prior post. Offer a humble selection of vintage Letterpress QSL cards!

q5letterpress.blogspot.com

All Things Wireless & Letterpress: Resurrecting a Drake TR-3: Pigtails!

http://q5letterpress.blogspot.com/2015/05/resurrecting-drake-tr-3-pigtails.html

All Things Wireless and Letterpress. All Things Wireless and Letterpress. Thursday, May 14, 2015. Resurrecting a Drake TR-3: Pigtails! This was something I found once in a parts drawer at a TV Repair Shop in Altamonte Springs, Florida back in the early early seventies. A friend of mine worked there. (His prior job was designing Monsanto's 'Circle Vision' projection screen exhibit at Walt Disney World! Can you dig that? Einstein with a Soldering Gun. His name was Jim . . . .). First, I picked up a spool o...