WS 19 Set High Power Amplifier No 2 Mk 1 2 & 3
WS19 Mk1 Mk11 Mk 111 Mk I MK II Mk III


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The RF amplifier No 2
Designed to amplify the modulated  RF output from the Wireless Set  No 19 and thus to increase the range of the latter.

It employs two or four ATS 25  valves in parallel which operate under Class A conditions.

On RT and MCW send / receive switching is carried out in the normal way from the 19 set, when sending CW however a separate S / R
switch on the amplifier unit  is used.

The 19 set variometer is replaced by Inductance Aerial Tuning No1, which tunes the aerial to a quarter wavelength.
 

When the amplifier is switched off the 19 set works normally without any reconnection.

The amplifier tunes from  2.1 Mc/s - 7.5 Mc/s in two bands and over this frequency range full gain is obtained.

Operation between 2 & 2,1 Mc/s and between 7.5 and  8 Mc/s is possible on any 19 set but full gain is not generally obtained.

Power Supply : -

Power is derived from the 12 volt accumulator which supplies heater current for the two or four ATS 25 valves connected in series - parallel, as well as input to a rotary transformer contained in the unit.
      

The rotary transformer which supplies HT  to anodes and screens has an output of  approximately 600v at 240 mA.

Accumulator current consumption for the amplifier alone is about 24 amps on send and 2.5 amps on receive.

All Mk 2 amplifiers are fitted with  a cooling fan and they may be run continuously on send.

Mk 1 amplifiers without fans must not be run continuously for more than 15 mins in each hour.  

Operating and Service
Information Including
The Circuit Diagram
Available Details Below 
On Paper CD or Download

Click Here


WS 19 Set High Power Amplifier No 2 Mk 1 2 & 3
WS19 Mk1 Mk11 Mk 111 Mk I MK II Mk III

Manuals are Available Worldwide as a Download on CD or Paper Copy.

Manual 24 A4 pages worldwide.

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We do all we can to provide the very best that is available for you.
But in the unlikely event that any data should not be as you expected.
A refund is always available. Kind Regards Allen and Alanna.


Manuals are Available Worldwide as Paper Copy on CD or as a Download

Thank you for your interest. Allen and Alanna G0RIT
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Revised: January 20, 2016