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A question on tube rigs in general, Kenwood in particular
hi bill,
join other ts-5xx/8xx hybrid fans here http://groups.yahoo.com/group/TS-520_820_530_830/ When in tune the power level is reduced to under 2 watts. if you want to lower your power out the car control will do this only for CW mode. If you want to use reduced power for SSB, in the files section in the above yahoo group there is a small external circuit that will use ALC to lower the power out. 73 jim billcalley wrote: Hi All, I have a Kenwood TS-530S, but I'm sure this question applies to most other tube rigs: Why is there even a TUNE setting on the MODE switch? I know that with this switch engaged the "input power to the final section is reduced to prevent tube damage during tune-up", but why not just adjust CAR (CAR LEVEL CONTROL) downward for this step, since CAR also controls "carrier level during CW operation". Is it simply a matter of convenience, or do these controls actually do somewhat different things? And while I'm on that subject of carrier level, I need to lower my 100 watts to about 10 watts. Is the best way to do this by simply lowering the CAR control? Does this technique give all the advantages, such as more protection to the finals (with a high VSWR) and generally longer tube life? Another quick question for anyone who is familiar with the Kenwood TS-530S with the 500Hz CW filter installed, but I noticed that unless I move IF-SHIFT counter-clockwise, the audio output is not centered on 800 Hz, but more like 1200 Hz or so. Is this normal for Kenwoods? Thanks for any help! -Bill |
#2
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A question on tube rigs in general, Kenwood in particular
On Apr 15, 12:56 pm, jim wrote:
hi bill, join other ts-5xx/8xx hybrid fans here http://groups.yahoo.com/group/TS-520_820_530_830/ When in tune the power level is reduced to under 2 watts. if you want to lower your power out the car control will do this only for CW mode. If you want to use reduced power for SSB, in the files section in the above yahoo group there is a small external circuit that will use ALC to lower the power out. 73 jim billcalley wrote: Hi All, I have a Kenwood TS-530S, but I'm sure this question applies to most other tube rigs: Why is there even a TUNE setting on the MODE switch? I know that with this switch engaged the "input power to the final section is reduced to prevent tube damage during tune-up", but why not just adjust CAR (CAR LEVEL CONTROL) downward for this step, since CAR also controls "carrier level during CW operation". Is it simply a matter of convenience, or do these controls actually do somewhat different things? And while I'm on that subject of carrier level, I need to lower my 100 watts to about 10 watts. Is the best way to do this by simply lowering the CAR control? Does this technique give all the advantages, such as more protection to the finals (with a high VSWR) and generally longer tube life? Another quick question for anyone who is familiar with the Kenwood TS-530S with the 500Hz CW filter installed, but I noticed that unless I move IF-SHIFT counter-clockwise, the audio output is not centered on 800 Hz, but more like 1200 Hz or so. Is this normal for Kenwoods? Thanks for any help! -Bill- Hide quoted text - - Show quoted text - Thanks Jim -- sounds like a great site. I'll take a look! Best Regards, -Bill |
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