:::: When I originally asked this question I mentioned that I needed a 12'
piece.
So buying anything shorter would involve a method to join them, plus the
shipping cost, which was part of the big problem.
In my case 6' or 8' still does not fit my need.
BILL
----- Original Message -----
From: "kingwood" <k5jv@kingwoodcable.com>
To: "Amp Reflector" <amps@contesting.com>
Sent: Friday, December 18, 2009 15:53
Subject: [Amps] Response the "QSK switching time"
> Greetings to all,
>
> I started responding to each reply off line. I am getting so many
> responses, and most are similar, so I am responding through the reflector.
>
> The idea of increased IMD is something I have not considered. I
> would certainly think that PIN's would be much better, in this respect, as
> they are much cleaner mixers than PN diodes. But, how much cleaner is
> cleaner?
>
> The idea of proper forward biasing is something that I have
> considered, and I certainly agree that switching diodes must be turned on
> "HARD" (Yes, I got it too), and had to avoid rectification during
> switching.
> Both the HeathKit and Ameritron boards use 12 volts for forward biasing.
> Any comments would be appreciated.
>
> I have to comment on Carl's thread. I have not been able to get
> through to them lately, either. My bone with them is that their Quality
> Control is awful, almost non-existent. Since I have started messing with
> QSK, I have bought two QSK-5, stand alone units, from them. One was dead
> right out of the box and the other failed within the first week of
> operation. The one that was dead out of the box was caused by a short of
> on
> the board from mounting too close together. This one took out two PIN
> diodes an two of the hi voltage switchers. The other one was simply cold
> solder joints. I see this regularly on boards send in for me to repair.
> Often, just repositioning components, and/or reheating solder joints fixes
> the problem. I do not think that new products should come out of the
> factory this way. Antenna tuners should not be sold with a rating of 1500
> watts, when in actuality, their coils get so hot with 1500 watts that the
> solder melts and flows away, leaving an open circuit because there was no
> physical connection made before soldering.
>
> Now, on the other side of the issue, I certainly do recognize the
> good that they do for the Amateur Radio Community, at large. I just wish
> they had a little better quality control.
>
>
> 73 de Lon, K5JV
>
> 1110 Golden Bear Ln.
> Kingwood, TX 77339
>
> 281-358-4207
> 281-358-4234 FAX
> 281-795-1335 CELL
>
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
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