Hello Brains Trust
The Kenwood TS2000 series of transceivers used different output devices in the 2m PAs on different production runs. I believe Kenwood moved to FETs in later models.
Can anyone help to identify which was used in my model from a serial number? Or direct me to where this info might be found
Mine is an early'ish model Serial Number 30600203 bought new through a major dealer around 2001
Kevin VK4UH Brisbane
TS2000 2m PA device Type
TS2000 2m PA device Type
Kevin (KJ) VK4UH
Brisbane
Brisbane
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Re: TS2000 2m PA device Type
Hi KJ.
Have you tried looking in the radio ? lol.
Im guessing you are wanting to upgrade to the latest device ?
Mark
Can anyone help to identify which was used in my model from a serial number? Or direct me to where this info might be found
Have you tried looking in the radio ? lol.
Im guessing you are wanting to upgrade to the latest device ?
Mark
Re: TS2000 2m PA device Type
Might be hard to tell if they're stuck upside down to a heatsink Mark!
73
Andy VK6OX
If you can't explain it simply, you don't understand it well enough. Albert Einstein
Andy VK6OX
If you can't explain it simply, you don't understand it well enough. Albert Einstein
Re: TS2000 2m PA device Type
Hi Kevin
According to technical service supplement dated 2002-2, from what I can see the TS 2000 with a serial no 30600203 or greater use PA Board X45-360-XX(A/2) with 2SC1972 transistors for 2M.
According to technical service supplement dated 2002-2, from what I can see the TS 2000 with a serial no 30600203 or greater use PA Board X45-360-XX(A/2) with 2SC1972 transistors for 2M.
73s
Igor
VK6ZFG
Igor
VK6ZFG
Re: TS2000 2m PA device Type
Yes, take the covers off and have a look!ZL2WHO wrote:Have you tried looking in the radio ? lol.
All doubt is removed.
Which may involve changing the bias arrangement, so be careful.ZL2WHO wrote:Im guessing you are wanting to upgrade to the latest device ?
Partially correct.VK6ZFG wrote:According to technical service supplement dated 2002-2, from what I can see the TS 2000 with a serial no 30600203 or greater use PA Board X45-360-XX(A/2) with 2SC1972 transistors for 2M.
Being only a ~10W device, a pair of 2SC1972 are utilised as drivers, as indicated in the block diagram, with a pair of 2SC2694 as the 2M PA developing the ~100W O/P.
Time to get all teary and sentimental... my TS-660 (circa 1980's) used a 2SC1971 as the driver, and a pair of 2SC1972s in the PA.
Damn things kept blowing, and genuine spares were hideous expensive to buy through Kenwood Australia.
Even back then!
On the third replacement, I pissed the 660 off for it to become somebody else's problem.
Why you never buy 2nd hand radios!
How is your Portuguese?
This TS-2000 owner must have some 'fake' 2SC1972s.
The last 5 seconds of the video says it all!
For those with defective browsers who cannot see the YouTube video above: https://www.youtube.com/watch?v=7MKoxRsQ4n0
Adam, Brisbane
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Re: TS2000 2m PA device Type
Thanks to Adam.
My model has the the bipolar devices almost certainly judging from the serial number and date of manufacture. The FET version did not come out until much later
KJ
My model has the the bipolar devices almost certainly judging from the serial number and date of manufacture. The FET version did not come out until much later
KJ
Kevin (KJ) VK4UH
Brisbane
Brisbane