[1000mp] Mod's to ft1000mp

Wed, 26 Feb 2003 21:04:58 -0800

> The modification to noise blanker is appropriate to all the 1000 series
> rig's ( not quite sure about the field )

> even though the blanker is switched off and front
> panel level control fully anti clockwise.

Where is the front panel level control located on the Mark V?  Tom W6EIJ

----- Original Message -----
From: "Graeme Jackson" <[email protected]>
To: <[email protected]>
Sent: Wednesday, February 26, 2003 1:36 PM
Subject: Re: [1000mp] Mod's to ft1000mp

> Hi Barry N1EU and readers.
>
> The modification to noise blanker is appropriate to all the 1000 series
> rig's ( not quite sure about the field )
> The dual gate fet in the input to the noise blanker is still producing
some
> gain ( guess abt 10/12db ) even though the blanker is switched off and
front
> panel level control fully anti clockwise.
>
> Here are some voltage readings for your perusal
>
> mod not fitted - tp2001 - noise blanker off front panel control anti cw =
> 1.26 volts.
>                         -tp2001 - noise blanker off front panel control
> clockwise = 2.56volts
>                         - tp2001 - nb on,  front panel control clockwise =
> 2.56 v
>                         -tp2001 - nb on, front panel control anti cw =
1.26
> v
>
>
> mod fitted - tp2001 - noise blanker off front panel control anti cw =
> 0.36volts
>                   - tp2001 - noise blanker off front panel control
clockwise
> = 0.45volts
>
> As you can see the first fet is capable of quite some gain when noise
> blanker switched off without the mod as a electroncs engineer explained to
> me !
>
> Hope the above is of interest
>
> 73 es gd dx'ing  Graeme  G4CKH.
> -----Original Message-----
> From: Barry N1EU <[email protected]>
> To: [email protected] <[email protected]>
> Date: 26 February 2003 13:28
> Subject: [1000mp] Mod's to ft1000mp
>
>
> >It is my understanding that, unlike the FT-1000D, the FT-1000MP does not
> >need the noise blanker mod (improved IMD) as long as you keep the noise
> >blanker fully ccw when not in use.
> >
> >73,
> >
> >Barry N1EU
> >www.n1eu.com
> >
> >
> >
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