[Elecraft] TS520S and KPA500/KAT500

[Wes Stewart]

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