Ambit DFM7 circuit
 

Hi,
I built one of these LW/MW/SW/VHF DFMs in the early '80s, and now want to modify
the offset settings for use with a different radio. Unfortunately, the circuit &
instructions were lost a long tome ago.
Does anyone have a circuit for this unit they could let me have a copy of, or
even just details of the diode matrix for setting the offsets?

TIA

TL.

(Ps. reply to the group in the first instance)

Hi

I have the diode matrix settings for the MSM5527RS chip whcih is at the
heart of the unit. Please contact me directly at the email address
below.

73 John KC0GGH
crabtreejr at aol dot com



wrote:
Hi,
I built one of these LW/MW/SW/VHF DFMs in the early '80s, and now
want to modify
the offset settings for use with a different radio. Unfortunately,
the circuit &
instructions were lost a long tome ago.
Does anyone have a circuit for this unit they could let me have a
copy of, or
even just details of the diode matrix for setting the offsets?

TIA

TL.

(Ps. reply to the group in the first instance)

Hi

I have the diode matrix settings for the MSM5527RS chip whcih is at the
heart of the unit. Please contact me directly at the email address
below.

73 John KC0GGH
crabtreejr at aol dot com



wrote:
Hi,
I built one of these LW/MW/SW/VHF DFMs in the early '80s, and now
want to modify
the offset settings for use with a different radio. Unfortunately,
the circuit &
instructions were lost a long tome ago.
Does anyone have a circuit for this unit they could let me have a
copy of, or
even just details of the diode matrix for setting the offsets?

TIA

TL.

(Ps. reply to the group in the first instance)