All radios cease production at some point, so this was inevitable. It doesn't make our radios worthless or perform any worse. What's not clear is how much additional firmware development there will b
When I lamented that I now own a radio that's out of production, a very good friend quipped "That's probably better than owning some of the radios that are still in production." To which I say "Hear!
Rick, you make an excellent point! Are you speaking of only IMD performance? If so, how good is good enough? Speaking only of 3rd order (O3) IMD, my old TS-930S has O3 IMD of -35 dB while my Orion II
Seeing N6BT's call, I decided to wade in with my short OCFD story: I have a Force 12 Sigma 80, a vertical OFCD for 80 m. It uses a hairpin match and very beefy loading coils. To handle the inherent i
I want to hand out kudos to TenTec service: I sent my O II in for service because of reduced power output and odd ALC behavior on 12 and 15 m. It took about 2 weeks for it to be repaired and sent bac
Well, that's interesting. The symptom was only on two bands... I wonder what the bias pots had to do with those bands? In fact, here's a query for other O II owners: In CW mode, I notice that *only*
I'm certainly not complaining! Merely noting that I'm a satisfied TenTec service customer. 73, Kim N5OP It takes 20 minutes and 4700 employees to assemble a Jeep. But it takes one guy an hour to just
I'm running 3.0xxxa on my O II and do not have that problem. Have you tried any of the various resets? Kim N5OP On 8/31/2013 1:18 PM, Mike Chatfield wrote: I am running version 3.033xa just installed
Ummmm... Not 3.0xxxa on my O II, but 3.033xa. Even with typos, I'm not experiencing the problem. Crummy band conditions are another story entirely. Kim N5OP "People that make music together cannot be
I think the thing to remember about rx antennas like small loops is that, while some of the noise may have a preferred polarization and small loops may provide some polarization isolation, they mostl
I have a K9AY loops system that I bought form Array Solutions. It's rather pricey, but for me it was a choice between time and money. I had the money, but not the time. I think it cost me between $45
I never saw that much difference in my 566. However, 10, 12, and 15 m are all about 90 W while the other bands are right at 100 W. this is with a well-regulated supply volt has of 14.9 V. I found tha
Unless the amp is QSK capable or he sets the OII to behave as semi QSK, he'll almost certainly suffer hot switching of the T/R relay. Very bad. Kim N5OP "People that make music together cannot be ene
Depends on how it's set up, but a long delay between keying and application of RF drive, along with a delay between the cessation of RF drive and unkeying the amp is needed to give the typical open-f
There are some QSK systems fast enough to run with a single line if the drive is delayed by a few ms; the Ameritron QSK5 PIN diode switch in my AL-1200 is one. But it does have a minimum time between
I took a slightly different approach: I built a new regulator board for my RS-35M linear supply that allows for remote voltage sensing. Thus, I regulate right at my distribution point, *not* at the s
If and only if the sole and singular concern is RF quiet operation, the a linear supply is the only choice. If efficiency plays a role, the you choose the technological path. As an aside, in WWII and
Well, yes. But not by intrinsic design in the same way as switching supplies. Kim N5OP "People that make music together cannot be enemies, at least as long as the music lasts." -- Paul Hindemith ____
Yep, regens, not super-regens. Mea culpa! Kim N5OP "People that make music together cannot be enemies, at least as long as the music lasts." -- Paul Hindemith ________________________________________
There is such a thing as super-regen receivers, but they aren't of much use for narrow-band modes and would not have been used at HF at all. Kim N5OP "People that make music together cannot be enemie