Collins 30S-1 T-102 1:1 ALC Transformer

PWDA13244 is an ALC transformer for the Collins 30S-1, identified in the ordering table as the T-102 position with a 1:1 ratio. It comes from the Peter W. Dahl files that form Hammond's PWDAHL Series of magnetics for amateur radio products, and is aimed at owners and technicians maintaining this Collins equipment.

The primary is specified as 3.5 HY @ 700 ohms, and the transformer is described as a 1:1 ratio ALC transformer. It is built on an EE 24-25 square stack core and listed as Style 1 on the series style sheet.

The shipping weight for PWDA13244 is 4 lbs (1.81 kg). The part is marked REACH compliant and RoHS compliant, and it is catalogued under UPC 623980999012 and UNSPSC 39121301 for purchasing records.

Like the rest of the PWDAHL Series, this transformer is usually built to order one at a time. Because many of these designs are decades old, Hammond recommends confirming availability by phone or e-mail before ordering, particularly when a restoration schedule depends on the part.

When ordering, quote both the Collins position (T-102) and the 3.5 HY @ 700 ohms primary rating so the replacement can be matched to the original ALC circuit in the 30S-1. The same series also lists a Collins 30S-1 choke, PWDI13159, for owners working through more than one part of this amplifier.