I have acquired on Ebay an amplifier HF ITT 12v 100W with written following:

600942-536-001
LPA ISSB
MADE IN USA

Someone knows to that apparatus belongs?

It is possible to find the schematic diagram?

Use one 2N4427 + 2xEGC3338 + 2xMRF455

Thank you

IK6GQC Rocco

"Mario Bros" wrote in message
...
I have acquired on Ebay an amplifier HF ITT 12v 100W with written
following:

600942-536-001
LPA ISSB
MADE IN USA

Someone knows to that apparatus belongs?

It is possible to find the schematic diagram?

Use one 2N4427 + 2xEGC3338 + 2xMRF455

Thank you

IK6GQC Rocco
Mario -

First comment is about the 2xEGC3338 ... these are rarely used in original
production -- which leads me to believe that someone has previously
repaired.

The trasnsistor specs can be found at: RF Parts www.reparts.com

gb

Hi G.Beat,
it is possible.
It is for that I am trying the original schematic and for knowing also like
feeding the part that polarizes the two ends transistors.

Ciao IK6GQC



"G.Beat" ha scritto nel messaggio
news:R9p3d.72371$MQ5.36165@attbi_s52...
"Mario Bros" wrote in message
...
I have acquired on Ebay an amplifier HF ITT 12v 100W with written
following:

600942-536-001
LPA ISSB
MADE IN USA

Someone knows to that apparatus belongs?

It is possible to find the schematic diagram?

Use one 2N4427 + 2xEGC3338 + 2xMRF455

Thank you

IK6GQC Rocco
Mario -

First comment is about the 2xEGC3338 ... these are rarely used in original
production -- which leads me to believe that someone has previously
repaired.

The trasnsistor specs can be found at: RF Parts www.reparts.com

gb

Motorola Application Notes written by Helge Granberg are good resources,
since most early RF designers heavily copied this design (especially since
the Application notes provided schematics and PC board silk screen layouts)

gb

"Mario Bros" wrote in message
...
Hi G.Beat,
it is possible.
It is for that I am trying the original schematic and for knowing also
like feeding the part that polarizes the two ends transistors.

Ciao IK6GQC



"G.Beat" ha scritto nel messaggio
news:R9p3d.72371$MQ5.36165@attbi_s52...
"Mario Bros" wrote in message
...
I have acquired on Ebay an amplifier HF ITT 12v 100W with written
following:

600942-536-001
LPA ISSB
MADE IN USA

Someone knows to that apparatus belongs?

It is possible to find the schematic diagram?

Use one 2N4427 + 2xEGC3338 + 2xMRF455

Thank you

IK6GQC Rocco
Mario -

First comment is about the 2xEGC3338 ... these are rarely used in
original production -- which leads me to believe that someone has
previously repaired.

The trasnsistor specs can be found at: RF Parts www.reparts.com

gb

Hi G.Beat,
I have watched between my books and the technical notes of the Motorola but
I have not found that that I try.
Several schematics show only the ends transistors and some time the pre-ends
transistors.
I have the impression that in order to polarize the ends transistors, this
board mounts 2 transistors TO220 with base-emitter connects together and
connected in series between of they in place of diode .

Ciao IK6GQC


"G.Beat" ha scritto nel messaggio
news:ykA3d.228170$mD.96361@attbi_s02...
Motorola Application Notes written by Helge Granberg are good resources,
since most early RF designers heavily copied this design (especially since
the Application notes provided schematics and PC board silk screen
layouts)

gb

"Mario Bros" wrote in message
...
Hi G.Beat,
it is possible.
It is for that I am trying the original schematic and for knowing also
like feeding the part that polarizes the two ends transistors.

Ciao IK6GQC



"G.Beat" ha scritto nel
messaggio news:R9p3d.72371$MQ5.36165@attbi_s52...
"Mario Bros" wrote in message
...
I have acquired on Ebay an amplifier HF ITT 12v 100W with written
following:

600942-536-001
LPA ISSB
MADE IN USA

Someone knows to that apparatus belongs?

It is possible to find the schematic diagram?

Use one 2N4427 + 2xEGC3338 + 2xMRF455

Thank you

IK6GQC Rocco
Mario -

First comment is about the 2xEGC3338 ... these are rarely used in
original production -- which leads me to believe that someone has
previously repaired.

The trasnsistor specs can be found at: RF Parts www.reparts.com

gb