Athearn GENESIS | HO scale (1:87) locomotives

SD70ACu
PRLX #7271
Progress Rail

DC/21-pin NEM decoder socket

In mid-2022, Progress Rail purchased a batch of ex-NS SD70ACU’s. Some of them had a red “PRLX” hand-written over the old logo, and some others were simply patched out completely as depicted on our models..

Athearn GENESIS | HO scale (1:87) locomotives

SD70ACu
PRLX #7330
Progress Rail

DC/21-pin NEM decoder socket

In mid-2022, Progress Rail purchased a batch of ex-NS SD70ACU’s. Some of them had a red “PRLX” hand-written over the old logo, and some others were simply patched out completely as depicted on our models..

Athearn GENESIS | HO scale (1:87) locomotives

SD70ACu
NS #7281
Norfolk Southern

DC/21-pin NEM decoder socket

In 2016, NS started an ambitious rebuild using ex UP SD9043MAC’s as cores. The rebuild included upgraded computers and electronic brakes, engine, and main generator overall, and new EMD cab. NS designated them as SD70ACU’s.

Athearn GENESIS | HO scale (1:87) locomotives

SD70ACu
NS #7300
Norfolk Southern

DC/21-pin NEM decoder socket

In 2016, NS started an ambitious rebuild using ex UP SD9043MAC’s as cores. The rebuild included upgraded computers and electronic brakes, engine, and main generator overall, and new EMD cab. NS designated them as SD70ACU’s.

Athearn GENESIS | HO scale (1:87) locomotives

SD70ACu
PRLX #7330
Progress Rail

DCC/sound - SoundTraxx Tsunami

In mid-2022, Progress Rail purchased a batch of ex-NS SD70ACU’s. Some of them had a red “PRLX” hand-written over the old logo, and some others were simply patched out completely as depicted on our models..

Athearn GENESIS | HO scale (1:87) locomotives

SD70ACu
NS #7242
Norfolk Southern

DCC/sound - SoundTraxx Tsunami

In 2016, NS started an ambitious rebuild using ex UP SD9043MAC’s as cores. The rebuild included upgraded computers and electronic brakes, engine, and main generator overall, and new EMD cab. NS designated them as SD70ACU’s.

Athearn GENESIS | HO scale (1:87) locomotives

SD70ACu
NS #7281
Norfolk Southern

DCC/sound - SoundTraxx Tsunami

In 2016, NS started an ambitious rebuild using ex UP SD9043MAC’s as cores. The rebuild included upgraded computers and electronic brakes, engine, and main generator overall, and new EMD cab. NS designated them as SD70ACU’s.

Athearn GENESIS | HO scale (1:87) locomotives

SD70ACu
NS #7300
Norfolk Southern

DCC/sound - SoundTraxx Tsunami

In 2016, NS started an ambitious rebuild using ex UP SD9043MAC’s as cores. The rebuild included upgraded computers and electronic brakes, engine, and main generator overall, and new EMD cab. NS designated them as SD70ACU’s.

The LokSound 5 micro DCC Direct Kato USA SD90 was specially developed for installation in some Kato USA N gauge vehicles like the SD90, SD90/43MAC, SD80MAC. and SD70ACu models instead of the standard analog board. 

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HobbyTech can load your preferred sound file.
The LokSound decoder is ready for your choice of prototypical sound. It is preloaded with a basic sound file intended for testing only.

First Step: Add your decoder to the Shipping Cart

Second Step: Visit these links to select and add the sound file suitable to your locomotive:

== LokSound 5 North American and Australian Sound files

== LokSound 5 European Sound files

Want to do it yourself?
Get your own LokProgrammer and add a new dimension to your hobby.

KATO | precision railroad models | N-scale | Diesel Locomotives | Standard DC
North American locomotives

SD70ACu
Canadian Pacific - CP #6644 - D-day scheme
(Military Heritage, D Day; Green Camouflage)

In many ways, the SD70ACU is a modified SD90MAC. The SD90MAC struggled to find a place on US and Canadian Railroads in the 90s. While Union Pacific and Canadian Pacific purchased many of these engines – smaller railroads felt alienated from the gigantic prime movers which limited the SD90MAC’s operational use. In 2016 Norfolk Southern decided to convert several SD90MACs to SD70ACUs, the Siemens tech was swapped with Mitsubishi components and the cab was replaced with the SD70ACe’s cab.

KATO | precision railroad models | N-scale | Diesel Locomotives | Standard DC
North American locomotives

SD70ACu
Canadian Pacific - CP #7020 - NATO green
(Military Heritage, green, black, yellow ribbon)

In many ways, the SD70ACU is a modified SD90MAC. The SD90MAC struggled to find a place on US and Canadian Railroads in the 90s. While Union Pacific and Canadian Pacific purchased many of these engines – smaller railroads felt alienated from the gigantic prime movers which limited the SD90MAC’s operational use. In 2016 Norfolk Southern decided to convert several SD90MACs to SD70ACUs, the Siemens tech was swapped with Mitsubishi components and the cab was replaced with the SD70ACe’s cab.

KATO | precision railroad models | N-scale | Diesel Locomotives | Standard DC
North American locomotives

SD70ACu
Canadian Pacific - CP #7021 - desert sand
(Military Heritage, beige, black, yellow ribbon)

In many ways, the SD70ACU is a modified SD90MAC. The SD90MAC struggled to find a place on US and Canadian Railroads in the 90s. While Union Pacific and Canadian Pacific purchased many of these engines – smaller railroads felt alienated from the gigantic prime movers which limited the SD90MAC’s operational use. In 2016 Norfolk Southern decided to convert several SD90MACs to SD70ACUs, the Siemens tech was swapped with Mitsubishi components and the cab was replaced with the SD70ACe’s cab.

KATO | precision railroad models | N-scale | Diesel Locomotives | Standard DC
North American locomotives

SD70ACu
Canadian Pacific - CP #7022 - NAVY
(Military Heritage, Navy, gray, black, maroon, yellow ribbon)

In many ways, the SD70ACU is a modified SD90MAC. The SD90MAC struggled to find a place on US and Canadian Railroads in the 90s. While Union Pacific and Canadian Pacific purchased many of these engines – smaller railroads felt alienated from the gigantic prime movers which limited the SD90MAC’s operational use. In 2016 Norfolk Southern decided to convert several SD90MACs to SD70ACUs, the Siemens tech was swapped with Mitsubishi components and the cab was replaced with the SD70ACe’s cab.

KATO | precision railroad models | N-scale | Diesel Locomotives | Standard DC
North American locomotives

SD70ACu
Canadian Pacific - CP #7023 - Air Force
(Military Heritage, gray, black, yellow ribbon)

In many ways, the SD70ACU is a modified SD90MAC. The SD90MAC struggled to find a place on US and Canadian Railroads in the 90s. While Union Pacific and Canadian Pacific purchased many of these engines – smaller railroads felt alienated from the gigantic prime movers which limited the SD90MAC’s operational use. In 2016 Norfolk Southern decided to convert several SD90MACs to SD70ACUs, the Siemens tech was swapped with Mitsubishi components and the cab was replaced with the SD70ACe’s cab.

KATO | precision railroad models | N-scale | Diesel Locomotives | Standard DC
North American locomotives

SD70ACu
Norfolk Southern, NS #7300
(black, white, Horse Head Logo)

In many ways, the SD70ACU is a modified SD90MAC. The SD90MAC struggled to find a place on US and Canadian Railroads in the 90s. While Union Pacific and Canadian Pacific purchased many of these engines – smaller railroads felt alienated from the gigantic prime movers which limited the SD90MAC’s operational use. In 2016 Norfolk Southern decided to convert several SD90MACs to SD70ACUs, the Siemens tech was swapped with Mitsubishi components and the cab was replaced with the SD70ACe’s cab.

KATO | precision railroad models | N-scale | Diesel Locomotives | Standard DC
North American locomotives

SD70ACu
Norfolk Southern, NS #7337
(black, white, Horse Head Logo)

In many ways, the SD70ACU is a modified SD90MAC. The SD90MAC struggled to find a place on US and Canadian Railroads in the 90s. While Union Pacific and Canadian Pacific purchased many of these engines – smaller railroads felt alienated from the gigantic prime movers which limited the SD90MAC’s operational use. In 2016 Norfolk Southern decided to convert several SD90MACs to SD70ACUs, the Siemens tech was swapped with Mitsubishi components and the cab was replaced with the SD70ACe’s cab.