Hammond PWDM13226 Johnson Viking II Modulation Transformer, 144 Watt
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224-955-1644Key Features
- Johnson Viking II modulation transformer, SNC P/N P1992
- PP 807's to parallel 6146
- 7000 ohms P-P primary at 100 mA
- Secondary 500 VAC at 250 mA DC, 2800 ohms
- 144 watts, 150Hz - 3kHz (per drawing)
- EI-112 x 1.875 core, Style 5, approx. 5 lbs
- Colour-coded leads, 12.0" minimum
The PWDM13226 is a modulation transformer for the Johnson Viking II, cross-referenced to SNC P/N P1992. It couples push-pull 807 modulators to parallel 6146 finals, and is aimed at Viking II owners and restorers rebuilding the AM modulator.
The ordering table lists the primary as 785 VCT at 100 mA for PP 807's at 7000 ohms P-P, and the secondary S1 as 500 VAC at 250 mA DC with RP = 2800 ohms. The part drawing shows the primary as 795VCT at 100mA, 7000 ohms P-P, the secondary as 500VAC at 250mA DC into 2800 ohms, a 150Hz - 3kHz range and a 144 watt rating. Leads are colour coded BRN, RED and BLU on the primary and GRN and BLK (COM) on the secondary, all at least 12.0" long.
The unit is built on an EI-112 x 1.875 core, Style 5. The drawing gives dimensions A 2.813", B 3.813", C 3.421", D 2.250", E 2.625" and mounting slots G 0.203" x 0.375". Approximate weight is 5 lbs (2.27 kg). The ordering table calls it T5 while the drawing title reads T4. It is REACH and RoHS compliant, UPC 623980397993, UNSPSC 39121301.
Dahl units are usually built to order one at a time; confirm availability by phone or e-mail. Stock units can usually be shipped next business day.
Ideal For
- Johnson Viking II AM restoration
- 807 modulator to 6146 final
- Modulation transformer replacement
- Vintage transmitter repair
Overview
| Series | Peter W Dahl Transformers (PWDAHL Series) |
| Part Number | PWDM13226 |
| Product Type | Modulation Transformer |
| Series Focus | Magnetics for Amateur Radio Products |
| Drawing Title | JOHNSON VIKING II T4, SNC P/N P1992 PP807'S TO PAR 6146 MODULATION TRANSFORMER |
| Short Description | JOHNSON VIKING II MOD XFMR |
| Original Part Reference | SNC P/N P1992 |
| Ordering Table Description | JOHNSON VIKING II MOD XFMR T5, SNC P/N P1992 PP 807'S TO PAR 6146 |
Dimensions
| A | 2.813" ±0.063 |
| B | 3.813" ±0.125 |
| C | 3.421" ±0.063 |
| D | 2.250" ±0.063 |
| E | 2.625" ±0.063 |
| G (Mounting Slot) | 0.203" X 0.375" ±0.015 |
Electrical
| Primary | 785 VCT @ 100MA PP 807 @ 7000 OHMS P-P |
| Secondary | S1) 500 VAC @ 250MA DC (RP = 2800 OHMS) |
| Power (Per Drawing) | 144 WATTS |
| Primary (Per Drawing) | 795VCT @ 100mA, 7000 P-P |
| Secondary (Per Drawing) | 500VAC @ 250mA DC, 2800 |
| Frequency Range (Per Drawing) | 150Hz - 3kHz |
Identifiers
| UPC | 623980397993 |
| UNSPSC | 39121301 |
Packaging & Shipping
| Shipping Weight | 5 lbs (2.27 kg) |
| Approx. Weight (Ordering Table) | 5 lbs |
Construction & Finish
| Core | EI-112 X 1.875 |
| Lead Length | All leads 12.0" long out min. |
| Style (Per Series Style Sheet) | 5 |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
What tubes is PWDM13226 designed for?▾
Push-pull 807's driving parallel 6146's, per the ordering table and drawing.
What is the primary voltage, 785 or 795 VCT?▾
The ordering table lists 785 VCT at 100 mA; the drawing shows 795VCT at 100mA. Both give 7000 ohms P-P.
What power and frequency range is it rated for?▾
The drawing shows 144 watts and 150Hz - 3kHz.
How long are the leads?▾
All leads are 12.0" long out minimum.
Is it the T4 or T5 transformer?▾
The ordering table labels it T5 and the drawing title reads T4; both list SNC P/N P1992.
Is this transformer kept in stock?▾
The series notes that these transformers are usually built to order one at a time, and that stock units can usually be shipped next business day. Confirming availability by phone or e-mail is recommended.
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