#114799

Is anyone using this amp with an FT817/8? Is it possible to modify the drive input to obtain 100watts output for 5watts in. With the newer bdx version their is a switch to select 5 or 10 watts drive for 100watts out so I thought the b model might have the same circuitry but just no switch.?
Where can I obtain a copy of the manual and circuit diagram, pdf or paper. ?I have only been able to find details on the bdx version.
Thanks for any comments/info ?

--
Peter Burnett G4BLL

D Jones

#114800

There seems to be an error in the HL100Bdx schematic that I am looking at.? RL2, the 5W relay, doesn't seem to do anything regardless of its state.? There appears to be a connection missing on the diagram.

I seems that the 5W position should simply bypass the attenuator.? Is there a similar attenuation circuit in the B version that cold be hardwired bypassed?

Show quoted text

On Wed, May 15, 2024 at 12:35 PM, Peter Burnett via groups.io
<g4bll.peter@...> wrote:

Is anyone using this amp with an FT817/8? Is it possible to modify the drive input to obtain 100watts output for 5watts in. With the newer bdx version their is a switch to select 5 or 10 watts drive for 100watts out so I thought the b model might have the same circuitry but just no switch.?
Where can I obtain a copy of the manual and circuit diagram, pdf or paper. ?I have only been able to find details on the bdx version.
Thanks for any comments/info ?

--
Peter Burnett G4BLL

#114801

Possible match?

Show quoted text

On Wed, May 15, 2024 at 1:50?PM D Jones via <Djoneses=[email protected]> wrote:

There seems to be an error in the HL100Bdx schematic that I am looking at.? RL2, the 5W relay, doesn't seem to do anything regardless of its state.? There appears to be a connection missing on the diagram.

I seems that the 5W position should simply bypass the attenuator.? Is there a similar attenuation circuit in the B version that cold be hardwired bypassed?

On Wed, May 15, 2024 at 12:35 PM, Peter Burnett via
<g4bll.peter=[email protected]> wrote:

Is anyone using this amp with an FT817/8? Is it possible to modify the drive input to obtain 100watts output for 5watts in. With the newer bdx version their is a switch to select 5 or 10 watts drive for 100watts out so I thought the b model might have the same circuitry but just no switch.?
Where can I obtain a copy of the manual and circuit diagram, pdf or paper.? I have only been able to find details on the bdx version.
Thanks for any comments/info ?

--
Peter Burnett G4BLL

#114802

Same document at another link:

Show quoted text

On Wed, May 15, 2024 at 5:20?PM Scott Wood <treii28@...> wrote:

Possible match?

On Wed, May 15, 2024 at 1:50?PM D Jones via <Djoneses=[email protected]> wrote:
There seems to be an error in the HL100Bdx schematic that I am looking at.? RL2, the 5W relay, doesn't seem to do anything regardless of its state.? There appears to be a connection missing on the diagram.

I seems that the 5W position should simply bypass the attenuator.? Is there a similar attenuation circuit in the B version that cold be hardwired bypassed?

On Wed, May 15, 2024 at 12:35 PM, Peter Burnett via
<g4bll.peter=[email protected]> wrote:

Is anyone using this amp with an FT817/8? Is it possible to modify the drive input to obtain 100watts output for 5watts in. With the newer bdx version their is a switch to select 5 or 10 watts drive for 100watts out so I thought the b model might have the same circuitry but just no switch.?
Where can I obtain a copy of the manual and circuit diagram, pdf or paper.? I have only been able to find details on the bdx version.
Thanks for any comments/info ?

--
Peter Burnett G4BLL

D Jones

#114803

Both sources show the same apparent error.

Show quoted text

On Wed, May 15, 2024 at 5:21 PM, The Notorious Tre`
<treii28@...> wrote:

Same document at another link:

On Wed, May 15, 2024 at 5:20?PM Scott Wood <treii28@...> wrote:
Possible match?

On Wed, May 15, 2024 at 1:50?PM D Jones via <Djoneses=[email protected]> wrote:
There seems to be an error in the HL100Bdx schematic that I am looking at.? RL2, the 5W relay, doesn't seem to do anything regardless of its state.? There appears to be a connection missing on the diagram.

I seems that the 5W position should simply bypass the attenuator.? Is there a similar attenuation circuit in the B version that cold be hardwired bypassed?

On Wed, May 15, 2024 at 12:35 PM, Peter Burnett via
<g4bll.peter=[email protected]> wrote:

Is anyone using this amp with an FT817/8? Is it possible to modify the drive input to obtain 100watts output for 5watts in. With the newer bdx version their is a switch to select 5 or 10 watts drive for 100watts out so I thought the b model might have the same circuitry but just no switch.?
Where can I obtain a copy of the manual and circuit diagram, pdf or paper.? I have only been able to find details on the bdx version.
Thanks for any comments/info ?

--
Peter Burnett G4BLL

#114804

The connection from the NO (normally open) contact on RL1 should connect to the COMMON contact on RL2. It is incorrectly shown connected to the NO contact of RL2?

Pat, WA3UOE
Sent from Android Google Pixel 7
???

Show quoted text

On Wed, May 15, 2024, 6:28?PM D Jones via <Djoneses=[email protected]> wrote:

Both sources show the same apparent error.

On Wed, May 15, 2024 at 5:21 PM, The Notorious Tre`
<treii28@...> wrote:

Same document at another link:

On Wed, May 15, 2024 at 5:20?PM Scott Wood <treii28@...> wrote:
Possible match?

On Wed, May 15, 2024 at 1:50?PM D Jones via <Djoneses=[email protected]> wrote:
There seems to be an error in the HL100Bdx schematic that I am looking at.? RL2, the 5W relay, doesn't seem to do anything regardless of its state.? There appears to be a connection missing on the diagram.

I seems that the 5W position should simply bypass the attenuator.? Is there a similar attenuation circuit in the B version that cold be hardwired bypassed?

On Wed, May 15, 2024 at 12:35 PM, Peter Burnett via
<g4bll.peter=[email protected]> wrote:

Is anyone using this amp with an FT817/8? Is it possible to modify the drive input to obtain 100watts output for 5watts in. With the newer bdx version their is a switch to select 5 or 10 watts drive for 100watts out so I thought the b model might have the same circuitry but just no switch.?
Where can I obtain a copy of the manual and circuit diagram, pdf or paper.? I have only been able to find details on the bdx version.
Thanks for any comments/info ?

--
Peter Burnett G4BLL

#114805

开云体育

Hi peter,

?

Yes, you’re correct.

?

I believe that the NO contact from relay 1 should be going to the wiper contact of relay 2, not the NO contact.

?

73….Eric VK2VE.

?

Show quoted text

From: [email protected] <[email protected]> On Behalf Of The Notorious Tre`
Sent: Thursday, May 16, 2024 7:21 AM
To: [email protected]
Subject: Re: [ft817] Tokyo Hy-Power HF Lin Amp HL100B

?

Possible match?

?

On Wed, May 15, 2024 at 1:50?PM D Jones via <Djoneses=[email protected]> wrote:

There seems to be an error in the HL100Bdx schematic that I am looking at.? RL2, the 5W relay, doesn't seem to do anything regardless of its state.? There appears to be a connection missing on the diagram.
?
I seems that the 5W position should simply bypass the attenuator.? Is there a similar attenuation circuit in the B version that cold be hardwired bypassed?
On Wed, May 15, 2024 at 12:35 PM, Peter Burnett via
<g4bll.peter=[email protected]> wrote:
Is anyone using this amp with an FT817/8? Is it possible to modify the drive input to obtain 100watts output for 5watts in. With the newer bdx version their is a switch to select 5 or 10 watts drive for 100watts out so I thought the b model might have the same circuitry but just no switch.?
Where can I obtain a copy of the manual and circuit diagram, pdf or paper.? I have only been able to find details on the bdx version.
Thanks for any comments/info ?

--
Peter Burnett G4BLL

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