It's available as a free PDF download on the TenTec web site. Go to: http://www.tentec.com/ then Steve G3TXQ _______________________________________________ TenTec mailing list TenTec@contesting.com
Good luck! I have an original manual that came with my CorsairII from new - it's about the same quality as the PDF download. 73, Steve G3TXQ _______________________________________________ TenTec mai
Recently I've been idly thinking about how I might keep my CorsairIIs running in the event of failure of the MCU on the Logic Board. I realise the preferred approach might well be to replace most of
Jerry, Yes I've seen the AADE offering, and that may well be the way to go. But I just feel it would be nice to keep the existing LED display, and I presume the AADE PIC doesn't include the keyer fun
Barry, I see them offered by several UK suppliers, but haven't yet attempted to purchase one. That would be the "proof of the pudding"! 73, Steve G3TXQ _______________________________________________
A while ago I replaced the PTO in one of my CorsairIIs with the DDS board from N4YG. Once I had modified it for single rail operation I was pretty happy with the results; but part of me regretted mak
Ron, It would be almost trivial to mount the N4YG board in an enclosure, connect to the accessory socket of the Corsair, and have a switch which allowed you to opt between the DDS and the internal PT
I decided I needed another challenge, so last week I taught myself some PIC assembler programming and bought a Arizona Microchip USB programmer. The result - a hand-wired matrix board with just a few
OK folks - I'm a bit overwhelmed by the interest! Here's a few comments on the various questions: * Way back when - the late 1970s - I programmed Motorola 8-bit NMOS micros in Assembler, so the 16F84
Folks, I've now added the iambic keyer functionality to my board using a second PIC. I didn't include the keyer memory functionality because I never use it, but the connectivity is there if I decide
Glenn, It's possible, but quite difficult. The processor chip does not allow the code to be accessed directly. As I understand it the trick that some have used successfully is to force the chip into
Rick, You don't actually need any logic between the PIC and the LEDs. The PIC can decode the BCD into the 7 segments needed for each LED and refresh each LED in sequence; it just has to work a bit ha
Final episode of the story (I think): I've produced a pcb layout of the PIC-based MPU replacement, and had a couple of boards made to prove the design; I used ExpressPCB in the USA - I was impressed
That sounds much more like a mechanical issue. I had something very similar and decided it was time for a PTO re-build; that cured it! 73, Steve G3TXQ _______________________________________________
Steve, I think I've done 4 re-builds now. On each one I've needed to carefully select the number of washers which space off the plastic spring housing at the back of the PTO; they determine how much
I designed my board and firmware to be a simple "drop in" replacement for the Corsair II mpu board. It interfaces to a display driver board which is unique to the Corsair II. So no - it can't be used
Folks, The keyer speed on my replacement Corsair mpu board is directly related to the frequency of the keyer clock oscillator on the audio processor board, which in turn is set by the front panel Spe
Having learned a little about PICs and what they can do, and inspired by N4YG's DDS system, I though I'd also learn a little about DDS technology. So I set about trying to build a "drop-in" DDS repla
I'm pretty happy with the DDS performance now, so if anyone is interested here is the final schematic of the PIC controller board: http://www.karinya.net/g3txq/corsair_pto/schematic.pdf And this is t
I see no warnings when I view my site in Firefox or IE7 + Norton. However I have received eMails from Google saying they have tagged the site as containing malware, so that shows up on a Google searc