Yaesu FT-897 as 23cm & 13cm IF chassis 

Planning to use Yaesu FT-897 as IF chassis for 23cm and 13cm operations. DB6NT transverters (and propably small PA's) fit into the battery compartment. The radio has also features very usable for transverter usage, eg. two programmable transverter offsets etc.

Normal 2m display
Normal 2m display

Menu item 091, transverter offset selection
Menu item 091, transverter offset selection

Transverter offset A selected
Transverter offset A selected

Transverter offset B selected
Transverter offset B selected

Transverter offset setting A. Note that the offset must be set so that the "true" frequency is active on the VFO.
Transverter offset setting A. Note that the offset must be set so that the "true" frequency is active on the VFO.

Transverter offset setting B. Note that the offset must be set so that the "true" frequency is active on the VFO.
Transverter offset setting B. Note that the offset must be set so that the "true" frequency is active on the VFO.

Transverter offset A in use. Very convenient to see true 23cm frequency!
Transverter offset A in use. Very convenient to see true 23cm frequency!

Transverter offset B in use. Very convenient to see true 13cm frequency!
Transverter offset B in use. Very convenient to see true 13cm frequency!

Battery indicators are to be used to indicate transverter status. BATT A will be 23cm, BATT B 13cm. The led can light in green and yellow and blink with certain voltage level applied to the battery connector.
Battery indicators are to be used to indicate transverter status. BATT A will be 23cm, BATT B 13cm. The led can light in green and yellow and blink with certain voltage level applied to the battery connector.

Battery selection switch on top of the radio. This will be used as "band selector", to select either 23cm or 13cm transverter.
Battery selection switch on top of the radio. This will be used as "band selector", to select either 23cm or 13cm transverter.

The battery compartment quite clearly visible in the bottom of the radio.
The battery compartment quite clearly visible in the bottom of the radio.

Lots of space to do things here!
Lots of space to do things here!

Modeling the layout of the available space. Both transverters will be attached to the side of the radio chassis for cooling. The chassis will be used as a heat sink instead of the original small heat sink attached to the transverter.
Modeling the layout of the available space. Both transverters will be attached to the side of the radio chassis for cooling. The chassis will be used as a heat sink instead of the original small heat sink attached to the transverter.

The chassis of the transverter needed to be lowered about 5mm to fit into the battery compartment.
The chassis of the transverter needed to be lowered about 5mm to fit into the battery compartment.

Modeling the layout with both 23cm and 13cm transverters. I think I will add at least the 23cm PA in the middle with a diecast aluminum core to distribute heat.
Modeling the layout with both 23cm and 13cm transverters. I think I will add at least the 23cm PA in the middle with a diecast aluminum core to distribute heat.

Battery connectors
Battery connectors


Powered by Gallery v1