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KG6BAJ > NWSGRP   11.09.09 04:42l 126 Lines 4717 Bytes #999 (0) @ WW
BID : 11104_N1OES
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Subj: Re: Grand Systems GD-6K Hookup Basics
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Sent: 090910/1600Z @:KG6BAJ.#NCA.CA.USA.NOAM #:11104 [Grass Valley] InterGate $

** NEWSGROUP: rec.radio.amateur.equipment
** FROM     : Samantha <samantha@comcast.net>

In article <4aa9516e$0$797$58c7af7e@news.kabelfoon.nl>,
 "Ben" <benzandstra_nospam_@caiway.nl> wrote:

> "Samantha" <samantha@comcast.net> schreef in bericht 
> news:samantha-D797D4.23471109092009@news.giganews.com...
> >I have this question posted in the boatanchors newsgroup, but the Grand
> > GD-6K Frequency Display could be used for a Radio that doesn't fall into
> > that description.
> >
> 
> Hi,
> 
> I do have no knowledge of the GD-6K at all. However, I could spend some time 
> to write my thougts in the ww usenet.
> 
> Using a frequency counter as readout for any transceiver mostly requires the 
> addition or subtraction of the IF to show the actual receive or transmit 
> frequency. Could it be possible that one of the other inputs is used to 
> separately feed the IF signal to the frequency counter ? Could it also be 
> possible that the Kenwood radio's do use 2 different IF's for transmit or 
> receive ?
> 
> If I'm complety talking non-sense then please ignore my message ;-)
> 
> Kind regards,
> Ben - PE2BZ 

No, actually you hit it pretty much on the head.  I talked to another 
ham that told me that he used a GD-6K on a TS-520S and that it hooked 
right up to the 3 connectors, plus the power connector.  It seems the 
Grand Systems GD-6K was a reply to the Kenwood DG-5 external display. (I 
won't say rippoff.. LOL) ..

Now I found an online manual of the DG-5 and it read, it said:

________________________________

The TS-520S operating frequency is made up as:

of = HET-(VFO+CAR)

In the The DG-5 where two counter circuits are connected in series, the 
heterodyne signal is fed to the lower counter.  This lower counter 
subtracts 10MHZ from the heterodyne frequency in a digital way 
(HET-10MHz).  The subtracted frequency presets the upper counter.  The 
other signal fed to the upper counter is composed in the manner that the 
carrier frequency is mixed with the 10MHZ reference frequency and the 
resultant is further mixed with the VFO frequency.  [(10MHz-CAR) - VFO].  
The signal is added to the one preset by the lower counter, that is:

[(10MHz-CAR) - VFO] + (HET - 10 MHz) = HET - (VFO + CAR)

As explained above you will find that the DG-5 should display the 
correct TS-520S Operating frequency.  The reason of using such a 
complicated construction is that if the GD-6K is the same as the TS-520S 
in the construction, this can produce a signal of the same frequency as 
the receive frequency.  The signal interferes as spurious with the 
operation of the TS-520S.



(1) HET Connector (H) -  The HET connector is used to input the 
heterodyne local signal of the TS-520S. To connect to it, use the 
supplied signal cable.

(2) CAR Connector (C) -   The CAR connector is used to input the carrier 
signal of the TS-520S. To connect to it, use the supplied signal cable.

(3) VFO Connector (V)  -  The VFO connector is used to input the VFO 
signal of the TS-520S To connect to it, use the supplied signal cable.


(4) Digital Frequency Display - Six digit 7-segment light-emitting 
diodes (LEDs) illuminate input frequencies in digital way.  The leftmost 
two digits are in units of MHZ, the succeeding three digits of kHz, and 
the right most digit of 100Hz.  These are section by two points.

(5)  Power Connector.  13.8V, 0.9A DC Power Connector - This connector 
supplies the TS-520S 13.8V, 0.9A DC Power into the GD-6K.  For 
connection, use the attached power cord.  It may also be connected to 
other power supplies of the same rating, for example, the KENWOOD Models 
PS-6 and PS-8.


__________________________________



Now all of these connectors connect to the Grand Design via three RCA 
jacks, and a keyed power cable.


My only real question at this point is in reference to this Post I found 
on the internet:

I found this message on forums.QRZ.com and it read, it said:
__________________________________________________________________
Quote:
Originally Posted by KK7US 
I have a Kenwood TS-820 with a Grand GD-6K aftermarket digital readout. 
One of the wires came loose from the plug in to the eight pin remote 
socket. It is the wire marked "C" on the back of the unit. Can anyone 
helpme figure out where that wire goes? I got the rtadio used some years 
ago, and there are no instructions. 
Thanks

KK7US, Lee
__________________________________________________________________



So how did this guy get the unit hooked up to a TS-820, there are no 
connectors on the back of the unit???

Well,  any Idea's would be welcomed!!!

Thanks!


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