Good question - but I'm not the owner. I'm simply checking it out for him. He owned an SX28 when he was a teenager in the 1960s - I think this is a "nostalgia trip" for him rather than a restoration
Yes - the ones in the RF/Mixer/Osc sub assembly are well nigh impossible to reach without a complete strip down. I'm not offering to re-cap it for him - it works well enough as it is for him to have
Rick, I you use the T-match simulator at: http://fermi.la.asu.edu/w9cf/tuner/tuner.html you'll find that minimum tuner loss usually corresponds to minimum inductance. Tom (W8JI) has some interesting
It's worth knowing that the ARRL TLW programme very significantly underestimates the loss of ladderline. I much prefer the free, and more accurate, calculator at: http://vk1od.net/calc/tl/tllc.php 73
What Rick said, plus: there was a higher power version produced - the KW109. This quote from G3RZP on another forum: "The KW109 design is not well suited for really high power - say above 500 or 600
I'd love to get hold of a Titan amplifier - or possibly a Centurion - to complete my CorsairII, OmniVI, line-up. Is there anything I need to look out for on these amps - common faults, lack of replac
Gordon, The serial number on my CorsairII is 580-01861. I purchased it new from KW in October 1986. Of course, manufacture could have been some considerable time before it was delivered to KW - the U
Interesting! I have two Corsair IIs and both have serial numbers starting 580 Steve G3TXQ _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contes
Thanks Barry. I would want it to be the 425 to match the "cosmetics" of the CorsairII and OmniVI. Regards, Steve G3TXQ _______________________________________________ TenTec mailing list TenTec@conte
It has to be grey or it will offend me :) http://www.karinya.net/g3txq/shack/op.jpg 73, Steve G3TXQ _______________________________________________ TenTec mailing list TenTec@contesting.com http://li
Dave, Yep - the colour of the LP-100 offends me! Out with the spray can, I guess :) The home-brew twin-meter SWR unit next to the LP-100 was an attempt to replicate the TT case style and colour - fai
There you go, John - that's at least two of us in the world who prefer the grey :) Regards, Steve G3TXQ _______________________________________________ TenTec mailing list TenTec@contesting.com http:
I measure 1.3v p/p from the PTO at the input to the xtal mixer board on my Corsair II. By the way, I replaced the PTO on one of my two Corsair IIs with the N4YG DDS board. That provides two VFO funct
I bought mine from him and fitted it last month. I made some simple modifications to mine which improved spurii levels significantly. I had multiple eMail exchanges with Joe telling him what I had do
Barry, You'd be amazed how much nicer the Corsair feels with the original tuning knob driving an encoder rather than the PTO. I even epoxied some steel nuts to the inside of the knob to give it extra
Barry, The tuning rate of Joe's DDS is velocity dependent - if you spin the dial fast it quickly goes from one end of the band to the other. At its slowest rate it is close to 1kHz for one complete t
Perry, I haven't tried it. If I get a chance over the next couple of days I'll do some tests. It would be nice to get some thorough testing done of Rx performance when equipped with the DDS, but I do
Greg, The DDS modification still uses the Corsair's "native" frequency readout circuitry, so setting accuracy is no better or worse than with the PTO. 73, Steve G3TXQ ________________________________
Readout accuracy is entirely dependent on the Corsair's "native" counter board; VFO frequency stability is entirely dependent on the DDS reference oscillator. What the DDS does *not* have is the 10kH
Perry, I took a quick look this morning. I keyed the Corsair at 30wpm, fast QSK, and 100W output into a dummy load. I tried 50kHz and 200kHz frequency splits. I listened to the signal on a monitor re