Message-ID: <000101c3e9da$b9c8e900$6507a8c0@Main>
From: "Alan Melia" <Alan.Melia@btinternet.com>
To: rsgb_lf_group@blacksheep.org
References: <HNEGLMNKFOEMMNHIFAPIIELPCDAA.g4wgt@talkgas.net>
Date: Mon, 2 Feb 2004 22:11:48 -0000
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Subject: LF: Re: Re: G0MRF 300w Tx & DDS VFO
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Hi Gary Ah you need 274kHz for the feed to the EXT pin it goes to the input
of a divide by two to give square wave drive to the PA stage. Still you
should be getting more than that out of it. It sounds as though something is
not right...50mV is far too low. Is there a LPF on the output?? It may be
that there is a component problem there.

Cheers de Alan G3NYK

----- Original Message -----
From: "G4WGT - Gary" <g4wgt@talkgas.net>
To: "Rsgb_Lf_Group" <rsgb_lf_group@blacksheep.org>
Sent: 02 February 2004 21:21
Subject: LF: Re: G0MRF 300w Tx & DDS VFO


> Hi to Alan, David, Laurence & LF,
>
> Thanks for your replies & suggestions, I was not able to get any output
with
> any of the arrangements. I then put the DDS VFO on the scope & found that
> the output at 137 KHz is only 50mV P-P & at 15 MHz is still low at only
> 300mV then its down to 50mV at its high end of 40 MHz, so its no were near
> its so called spec of 1V P-P. I will have to investigate further. May be
the
> answer is an intermediate amplifier.
>
> 73
>
> Gary - G4WGT
>
>