I'm not familiar enough with the Kenwoods to know, but I was wondering where the SD is lacking to the SDX. Especially in the bandwidth department. Any info will be appreciated, thanks.
Tax return time is almost here... time to go rig shopping!
950SD vs. 950SDX
950SD vs. 950SDX
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Voodoo Guru
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Howdy,
There are allot of differences, and the S & SD series do not make good audio rigs.
Here are some of the differences:
There are quite a few differences between the 2 rigs that allot of people are not aware of.
Most think they are the same.
There is allot of circuits that are the same, but also allot that are different.
There are no direct replacement Circuit Boards between the two units, except for the Power supply and the Control unit, but only after a few modifications.
That's how different they are.
The SD uses the DSP unit for SSB TX only.
On Receive, it only uses it for slope tuning and not for any SSB IF Receive DSP functions.
On SSB receive, since the SD rig does NOT use the DSP unit for Receiving, it uses the Analog Filters in the rig to remove the opposite sidebands.
So what this means is that if you receive any SSB signal using a wider filter then 2.7Kc on the TS950SD, it will be Double Sideband.
The SD can TX and RX on SSB without the DSP unit, as it will switch internally when it is removed.
The SDX uses the DSP unit for SSB and AM modes on TX, AND for SSB on Receive.
The SDX will not receive or TX SSB without the DSP unit installed.
This is because all the extra circuitry that the SD had was removed from the PC boards on the SDX because since the DSP unit was an integral unit, they were no longer necessary.
This includes the AM modulator circuit and all the 455KHz PLL frequency generating circuitry.
The DSP unit know takes care of all of this.
The circuitry after the SSB Demodulator Ring diodes was also removed for the same reasoning.
There where allot of additional modifications to the SDX to better it then the SD.
The biggest thing was the use of MOSFET finals in the PA section.
There are allot more differences between the two.
Two many to go into here.
The short of it is, The S and SD do not play eSSB very well.
One more thing,
You cannot do the 6Kc TX Power-On mod on the S or SD.
You can only do this with the SDX.
Take Care,
There are allot of differences, and the S & SD series do not make good audio rigs.
Here are some of the differences:
There are quite a few differences between the 2 rigs that allot of people are not aware of.
Most think they are the same.
There is allot of circuits that are the same, but also allot that are different.
There are no direct replacement Circuit Boards between the two units, except for the Power supply and the Control unit, but only after a few modifications.
That's how different they are.
The SD uses the DSP unit for SSB TX only.
On Receive, it only uses it for slope tuning and not for any SSB IF Receive DSP functions.
On SSB receive, since the SD rig does NOT use the DSP unit for Receiving, it uses the Analog Filters in the rig to remove the opposite sidebands.
So what this means is that if you receive any SSB signal using a wider filter then 2.7Kc on the TS950SD, it will be Double Sideband.
The SD can TX and RX on SSB without the DSP unit, as it will switch internally when it is removed.
The SDX uses the DSP unit for SSB and AM modes on TX, AND for SSB on Receive.
The SDX will not receive or TX SSB without the DSP unit installed.
This is because all the extra circuitry that the SD had was removed from the PC boards on the SDX because since the DSP unit was an integral unit, they were no longer necessary.
This includes the AM modulator circuit and all the 455KHz PLL frequency generating circuitry.
The DSP unit know takes care of all of this.
The circuitry after the SSB Demodulator Ring diodes was also removed for the same reasoning.
There where allot of additional modifications to the SDX to better it then the SD.
The biggest thing was the use of MOSFET finals in the PA section.
There are allot more differences between the two.
Two many to go into here.
The short of it is, The S and SD do not play eSSB very well.
One more thing,
You cannot do the 6Kc TX Power-On mod on the S or SD.
You can only do this with the SDX.
Take Care,
Voodoo Guru
From Deep in the IDD of the Sub-Harmonix Realm
From Deep in the IDD of the Sub-Harmonix Realm
950SD vs. 950SDX
Wow! Very good info. Thanks for taking your time to answer so completely.
Alright... How does this sound?