[1000mp] Low Xvtr Output

Thu, 7 Feb 2002 16:17:32 -0800

Hi John,

Tnx for your reply.  I looked at the schematic yesterday hoping thr was just
a low value series R in the xvtr out lead that I could reduce or bypass.  I
see the divider network you're mentioning.  I'll be checking with DEM to see
if they make a little 28Mc amp that would work.

The input attenuator in the SSB xvtr has already bn set to minimum.

Tnx & 73,
Bob, K6PF

----- Original Message -----
From: "john lemay" <[email protected]>
To: <[email protected]>
Sent: Wednesday, February 06, 2002 1:12 PM
Subject: Re: [1000mp] Low Xvtr Output

Bob

1. I think you can modify the mp, at your own risk of course !
Study the circuit - the transverter output is fed from a potential divider
and it certainly looks like you could change the values. Bet it's a bugger
to get to ?
2. Bypass the input potentiometer in the SSB transverter - that could gain a
few dB.
3. Run the SSB transverter into a small amplifier - potentially this could
give you a really good quality signal because everything downstream will be
under-run.

Regards

John G4ZTR

----- Original Message -----
From: Bob Kocisko <[email protected]>
To: FT-1000MP Mailing List Postings <[email protected]>
Sent: Wednesday, February 06, 2002 4:41 AM
Subject: [1000mp] Low Xvtr Output

> Hello,
>
> I recently purchased a used FT-1000MP primarily for use as a 28MHz IF with
> VHF & UHF xvtrs.  The 28MHz power output at the xvtr port measures
> about -20dBM.  My SSB xvtrs would like to see between
> -10dBM & 0dBM of drive.  Does anyone on this reflector know how to modify
> the 1000MP to get an additional 10 to 20dB of gain?  One of the reasons I
> purchased the MP is because of the separate Rx antenna & xvtr output ports
&
> the switch to turn off the PA stages. I was aware of this low drive level
> when I purchased it.
>
> Tnx in advance for any help.
>
> 73,
> Bob, K6PF
>
>
> _______________________________________________
> 1000mp mailing list
> [email protected]
> http://mailman.qth.net/mailman/listinfo/1000mp
>

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