[Elecraft] TS520S and KPA500/KAT500

[Martin Sole]

I had a look but couldn't see how you could do that. CW yes but couldn't 
figure it out for SSB. Did you read it in the manual?

Martin, HS0ZED


On 22/07/2018 20:29, Wes Stewart wrote:
> According to the manual which is easily located online, the 
> transmitter power is adjustable.
>
> If it wasn't, a 6dB pad would do wonders.
>
> Wes  N7WS
>
>
> On 7/22/2018 6:05 AM, Martin Sole wrote:
>> I might be way off here but from what I recall these older vacuum 
>> tube final amplifier radios have output that is variable in fixed 
>> carrier modes such as CW but which almost always produce full output 
>> in SSB. You might be able to reduce output by winding back the mic 
>> gain but it will likely sound a bit "thin" and any loud noises over 
>> an above nominal speech will produce more output. When you set the 
>> carrier or drive control that only has an effect on the CW output, it 
>> doesn't set the SSB output.
>>
>> I recall a common way to limit the output of these radios in SSB mode 
>> was to feed a dc voltage into the external ALC input of the rig in 
>> order to have it reduce power.
>>
>> Martin, HS0ZED
>>
>>
>>
>> On 22/07/2018 08:59, Nr4c wrote:
>>> I want to use a Kenwood 520S with my KPA500 amp. I have the cable 
>>> from the 520 Remote connector to amp PTT IN.
>>>
>>> I assume I should tune up radio with dummy load and then turn Drive 
>>> down low and switch amp to Operate. Now turn up drive to get desire 
>>> amp output.
>>>
>>> Now I ask, “What have I forgotten (or never knew about tube 
>>> radios))?”  Anything else I need to pay attention to or what am I 
>>> missing?
>>>
>>> Sent from my iPhone
>>> ...nr4c. bill
>
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