On 1/30/2012 9:51 PM, Stephen Cannon wrote:
> In response to " What does the buffer amplifier do?" The ad for the Buffer
> Amplifier says: The Z10000B was developed to obtain an isolated signal
> sample from the IF of a transceiver or receiver to output to a spectrum
> analyzer or panadapter. I have run the O II with and without the buffer
> amplifier and the O II works both ways, however I did have some problems
> when I was operating the O II without the Buffer amplifier and never had any
> problems when I did use the buffer amplifier. So I always use it now.
> Note that this is when used with a O II that was modified by TT Service
> Dept. to extract a 9 MHz IF signal (no buffer/isolator installed inside the
> O II). I have not installed the RX-366 Sub-RX yet, but at $639 that will
> happen soon.
> Sorry it has been a year or two since I did that mod& set up the
> panadapter and I do not recall now exactly what the problems were at that
> time - I think they were related to overflow issues. I paid about $25 for
> the buffer amplifier, assembled, tested, and installed in a box.
> I am not sure if the RX366's 9 MHz IF output is buffered and reverse
> isolated or not; perhaps John Henry can answer that. If the RX-366's 9 MHz
> IF output is buffered and reverse isolated than you probably do not need an
> additional buffer/reverse isolator.
> Stephen AD7TD
> -----Original Message-----
> From: John Molenda
> On 1/30/2012 4:28 PM, Stephen Cannon wrote:
>> Personally, I would wait for the RX366 (since it is due out any day
>> now) and use it (since it does output a 9 MHz IF) in lieu of modifying the
>> This way you get a better Sub-RX as well as the 9 MHz IF output, and
>> you can easily do this mod yourself by a simple easily accessible
>> board replacement (might be cheaper than shipping& insuring the O II
>> to TT and back, and paying TT to do the mod). You may need an
>> additional RG-178 miniature cable with Taiko Denki TMP plugs on both
>> ends, (which TT sells for about $12), to connect the new Sub-RX
>> board's 9 MHz IF output to the empty Taiko Denki jack on the I/O board
> (and thus have the 9 MHz IF output coming out the "SPARE"
>> jack on the back of the O II). You will still need to get the
>> Z10000B-U buffer amplifier from Clifton Labs (with 0 dB gain) to
>> connect between the back of the O II and the panadapter.
>> That said I am sure you can still get TT to do the mod for you.
>> Stephen AD7TD
>> -----Original Message-----
>> From: John Molenda
>>> VE7TK has offered a mod to add a Clifton Z10000(b) buffer
>>> amplifier to extract a 9 MHz signal for use with the Elecraft P3.
>>> Has anyone had experience with this mod or later use with the P3?
>>> 73 de Dave, K1OPQ
> What does the buffer amplifier do ? John kb2huk
> TenTec mailing list
Thanks for taking the time to explain what the Buffer amplifier is for
. John kb2huk
TenTec mailing list