| Active Band Pass Filter Program |
This neat program lets you design active bandpass filters (for CW, RTTY, etc) and actually draws a schematic of the results. Load time is about 3min l0 sec. When it is loaded, you will be presented with a menu that gives nine options. |
Timex/Sinclair 1000 |
| Bits & Bytes |
This column will try to track and document the quirks, fixes, and unique modifications done to the Sinclair computers. Let’s hear from you. Here’s what we have this month: 23. Old 35 mm film cans are just the right size for storing printer tapes from the Mindware 16 column printer. 24. KAØOOQ has reported that |
Timex/Sinclair 1000 |
| Direct Video Mod |
Here’s a video reverse/clean-up mod that started as W4MHQ’s “Direct Video Output” in QZX VOL.1 NO. 2. Like W4MHQ’s, this circuit uses a 75451 to do the output switching. The values of the resistors that define the pedestal and P-P video levels of the output were changed to very nearly duplicate the video signal at |
Timex/Sinclair 1000 |
| E-Z Load Modification |
Based on the information on the recorder to computer interface for the ZX81 which appeared in the Jan 8 3 issue of QZX, I have experimentally devised the following simple matching network for my machine. It consists of only two parts aside from the connectors and enclosure – a 0.1 or 0.2 uF capacitor and |
Timex/Sinclair 1000 |
| Editor's Doings |
Well, we made it both ways without a hitch. Even the weather cooperated, keeping the humidity & mosquitos to a minimum. I did get my annual exercise of the car’s windshield wipers though. Returning to good ol’ New Mexico, I found the mailbox full of new subscribers and lots of good articles. I don’t know |
|
| Memotext Word Processor |
MEMOTEXT is a word processing program by MEMOTECH written especially to run on the ZX-81, TIMEX/SINCLAIR 1000 computers. The program comes hardcoded on a ROM in a standard MEMOTECH module that plugs onto the expansion interface, so the program is instantly available with power on. There is a toggle switch on the module to switch |
Timex/Sinclair 1000 |
| Miscellaneous Comments |
Following are some some ‘camera ready’ comments from John, KB4XH, with underlining emphasis supplied by your editor. The good words on QZX, and about XLR8 are appreciated. Evidently I wasn’t off base with my hasty opinion/recommendation of XLR8. |
|
| Products in Review |
The first review is from Russ, W9CQD. It is on the Byte Back Co. ‘s Telephone Modem ($119.95 kit). After waiting 5 weeks due to an ‘outage’ of circuit boards, I received my modem kit. The boards are a very good quality with silk screened parts locations. There are two boards plus the small extender’ |
Timex/Sinclair 1000 |
| QZX Friends |
Here’s your chance to let your ambitions and accomplishments be known. Feel free to let us know what you are up to, and to contact those ‘doing your thing’. |
Timex/Sinclair 1000 |
