[UK-CONTEST] Dressler D 200 s VHF Linear Amp

[John Wilson]

Will,
I've got one of these and never seen more than about 500 W out maximum. 
For good linearity on SSB I wouldn't push it above about 350 W.  Don't 
take any notice of the power output meter, it's grossly optimistic.  The 
amp is very sensitive and I get full power with about 2 Watts on the 
input and the attenuator switched out.  With a higher power rig start 
off with it set to its lowest possible output power and have the 
amplifier input attenuator set to maximum and work up from there.

John G3UUT

Pascal Grandjean - F5LEN wrote:
> Hi Will,
> I know at least 3 models of D200S... and have two here still
> working well.
>
> You can use the attenuator on the back side of the amp.
> (It's a single variable capacitor).
> Or if you can choose the output power of the transceiver,
> D200 work well with few watts input.
>
> I'm not sure that reaching 1KW output with a D200 is a good idea
> for stations in your neighborhood... ;-)
>
> 73's Pascal - F5LEN
>
>   
>> -----Original Message-----
>> From: uk-contest-bounces at contesting.com
>> [mailto:uk-contest-bounces at contesting.com] On Behalf Of Will Rittman
>> Sent: 21 February 2010 00:29
>> To: uk-contest at contesting.com; vhfcontesting at contesting.com
>> Subject: [UK-CONTEST] Dressler D 200 s VHF Linear Amp
>>
>> Hi All
>>
>> I have just got a Dressler D200S VHF Amp for contesting and general chat 
>> on 2
>> However I'm wondering if I can underdrive it or turn it down somehow to 
>> give out 150W
>>
>> There is a attenuator pot on the back as well as a high/low switch to 
>> turn the attenuator on.
>>
>> The input power for full power is 10-12w drive for anything from 400 to 
>> 1KW out on SSB
>>
>> Thanks
>> Will M0GYZ
>> _______________________________________________
>> UK-Contest mailing list
>> UK-Contest at contesting.com
>> http://lists.contesting.com/mailman/listinfo/uk-contest
>>
>> __________ Information from ESET NOD32 Antivirus, version of virus signature
>> database 4885 (20100221) __________
>>
>> The message was checked by ESET NOD32 Antivirus.
>>
>> http://www.eset.com
>>
>>
>>  
>>
>> __________ Information from ESET NOD32 Antivirus, version of virus signature
>> database 4885 (20100221) __________
>>
>> The message was checked by ESET NOD32 Antivirus.
>>
>> http://www.eset.com
>>  
>>  
>>
>> __________ Information from ESET NOD32 Antivirus, version of virus signature
>> database 4885 (20100221) __________
>>
>> The message was checked by ESET NOD32 Antivirus.
>>
>> http://www.eset.com
>>  
>>
>> _______________________________________________
>> UK-Contest mailing list
>> UK-Contest at contesting.com
>> http://lists.contesting.com/mailman/listinfo/uk-contest
>>
>>
>>     
> _______________________________________________
> UK-Contest mailing list
> UK-Contest at contesting.com
> http://lists.contesting.com/mailman/listinfo/uk-contest
>
>