If you have schematic of the module, you might be able to extrapolate
and get a starting point for the L and C changes required to pull those
down in frequency. You'll need the Harris print that lists the freq
determined component values. You can log on to the Harris portal once
you provide a password/username, and download documentation. As for the
components, do you know what size they are? American Technical Ceramics
can provide most low loss porcelain ceramic chips for RF amplifiers, but
you need size and values as a starting point. I am assisting another ham
in the tune a Harris Platinum low band VHF module up in frequency, same
exercise.
73
John
K5PRO
On 12/18/16 10:00 AM, amps-request@contesting.com wrote:
Message: 3
Date: Sun, 18 Dec 2016 07:24:02 -0500
From: James Malone <wa3lbi@me.com>
To: "amps@contesting.com" <amps@contesting.com>
Subject: [Amps] Harris Diamond UHF
Message-ID: <0C0300BC-82E0-4385-A7B1-89D30B3DCB6B@me.com>
Content-Type: text/plain; charset=us-ascii
I have some Harris Diamond Uhf modules on the bench after sweeping them and
looking at the return loss at the input they look very promising as a 432 MHz
amplifier .
The one I have looks to be high uhf around 635 MHz .
Does anyone have access to cap values and other components to lower the
frequency range?
Many thanks for reading my request.
73 Merry Christmas
Jim WA3LBI
Sent from my iPhone
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