[Amps] Harris Diamon UHF

[John Lyles]

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 at contesting.com wrote:
> Message: 3
> Date: Sun, 18 Dec 2016 07:24:02 -0500
> From: James Malone <wa3lbi at me.com>
> To: "amps at contesting.com" <amps at contesting.com>
> Subject: [Amps] Harris Diamond UHF
> Message-ID: <0C0300BC-82E0-4385-A7B1-89D30B3DCB6B at 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