[Amps] Grid driven Multi-band amp using 4-1000

Jan Erik Holm sm2ekm at telia.com
Thu Jan 20 02:43:11 EST 2005


Gain in GG depends on plate voltage and drive power.
If we use the example below 8171 can give 15 dB gain.
That is way more then 12% of full output for the tube.
EIMAC states about 16 kW max output in AB1.
Anyway, this is way too much for ham radio use, don´t
even think about using power levels like this!!

73 Jim SM2EKM
--------------------------------------------------------

R.Measures wrote:

> 
> On Jan 19, 2005, at 10:58 AM, Jan Erik Holm wrote:
> 
>>
>>
>> R.Measures wrote:
>>
>>> On Jan 19, 2005, at 7:51 AM, Jan Erik Holm wrote:
>>>
>>>>
>>>>
>>>> R.Measures wrote:
>>>>
>>>>> A 200w transceiver will drive a 4-1000A in g-g or an 8171 in 
>>>>> grid-driven.
>>>>
>>>>
>>>> It will also drive the 8171 in g-g!
>>>
>>> Yes, to roughly 12% of full output.
>>>
>>>>
>>>> 73 SM2EKM
>>>>
>> No a lot more then that!!
> 
> 
> An 8171 has about 20db gain in AB1 grid-driven service.  How many db 
> gain does it exhibit in g-g service?
> 
>>
>> 73 SM2EKM




More information about the Amps mailing list