Folks, This was the problem: On the host GoDaddy USA server, at the level above my "karinya" domain, the .htaccess file had been attacked and changed so that it pointed to a malware site. It had been
Folks, I submitted the site for a Google malware scan yesterday evening. The results are back this morning - everything is clean and Google have removed the warnings. I expect that to be the end of t
If that transmitter is delivering a constant power, that is what you would expect. Power delivered = Pforward - Preflected So, if Preflected drops because the SWR is falling, so must Pforward drop if
As Jerry said ..... but just in case there is any lingering confusion, the new board replaces Ten-Tec's "81246 Logic Board". The new board is functionally identical to the TT part except: * It update
For any folks who may be interested I just produced a web page describing my PTO replacement: http://www.karinya.net/g3txq/corsair_pto/ Although I don't expect anyone will want to replicate my design
I received my ExpressPCB boards back yesterday and today have built a couple of DDS units to prove the design - all is well. I've added a photo of the enclosure containing the new board to my web pag
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 73, Barry N1EU
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
It's available as a free PDF download on the TenTec web site. Go to: http://www.tentec.com/ then Steve G3TXQ On 11/07/2011 06:02, Christopher Clarke wrote: Hi Jim I wonder if you could find me a Cors
Barry, When you say "all four" digits, I presume you mean the 100kHz, 10kHz, 1kHz and 100Hz digit positions? They are driven by a multiplex arrangement where the same segment in all digit positions i