[ARC5] SCR-183/-283 4-5 MC Coil on 75 MTRs

[AKLDGUY .]

> Look up the operating data and the plate characteristics for a 12J5. Then
do the calculations for Class C.
>
> 73 de Brian, VK2GCE.

Thank you Brian.

I think I can actually do better than that. I have the RCA Transmitting
Tubes manual for 1956 (price one dollar!) and it lists the maximum CCS
ratings for the 1626 when used as RF Power Amplifier and Oscillator - Class
C.

Unfortunately it doesn't give typical operating conditions, hence my
questions about plate current and bias resistor.

Max plate voltage, current, and dissipation are 250V, 25mA, and 6.25W. I
think I could probably run it at 5W and get between 3 and 4 watts out of it.

73 de Neil ZL1ANM


On Tue, Jul 8, 2014 at 7:14 PM, Brian Clarke <brianclarke01 at optusnet.com.au>
wrote:

> Hello Neil,
>
> Look up the operating data and the plate characteristics for a 12J5. Then
> do the calculations for Class C.
>
> 73 de Brian, VK2GCE.
>
> On: Tuesday, July 08, 2014 4:48 PM, You asked:
>
>
>  Referring specifically to the BC-xx-230 model:
>>
>> How does one determine the setting for the roller inductor?
>> Has anyone tried using the 1626 triode for VFO and PA?
>> If so, what B+ and bias resistor did you use?
>> What is the optimum 1626 PA plate current for CW?
>>
>> Any other useful hints?
>>
>> 73 de Neil ZL1ANM
>>
>
>