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Large Transmitting Power Chokes

200 µH
70 Amp
Dimensions:  7-1/2"L x 5"W x 4-1/2"H. Mounting holes: 6-1/2" x 3-1/2". 4.854mm

Power choke. 200 µH @ 70 amps. 0.19" x 0.19" square enameled wire. 7-1/2" x 5" x 4-1/2". Mounting holes: 6-1/2" x 3-1/2". 4.854mm. NSN: 5950-01-157-6598.

700 µH
45 Amp
0.1 ohm DCR

Open frame power choke. 700 µH @ 45 amps. 0.1 ohm DC resistance. 3-3/4" x 4-5/8" x 5-1/4"H.
NSN: 5950-00-570-5074.

0.4 Hy @ 1.75 Amp
0.7 Hy @ 0.15 Amp
0.9 ohm DCR

UTC swinging power choke. 0.4 Hy @ 1.75 amps, 0.7 Hy @ 0.15 amps. DCR = 0.9 ohm. 1500v Hipot. 5-3/4"D x 7-1/8"H. Used, removed. Only one available.

0.7 Hy @ 1.10 Amp
1.1 Hy @ 0.10 Amp
4 ohm DCR

UTC swinging power choke. 0.7 Hy @ 1.10 amps, 1.1 Hy @ 0.10 amps. DCR = 4 ohm. 8kv Hipot. 5"D x 5-1/2"H. Used, but in excellent condition. Only 2 available.

0.6 Hy c.t.
2.5 Amp
115v

Power choke reactor. 0.6 Henry C.T., 2.5 amps, 115 volts, DCR: 6 ohm. NSN: 5950-00-795-5549.

Power Choke 1H @ 1 Amp

(CPW) BE10426001

1 Hy
1 Amp
Dimensions: 6-1/4"L x 4-5/8"W x 5-1/4"H

Basler Electric power choke. 1 Henry, 1.0 adc. 21 lbs. Made for Gates / Harris broadcast transmitter. Gates P/N: 476-0298-000.

0.75 Hy
4.5 Amp
12kV test

Hitran inductor. 0.75 Henry, 4.5 adc, 12 kv test. 9" x 5-1/4" base, 8-1/4" high. Catalog #: AP0475. Alt. P/N: AP0194-1. Used, excellent condition.

1.4 Hy
1.5 Amp
12kV test

Hitran inductor. 1.4 Henry, 1.5 adc, 12 kv test. 9" x 5-1/4" base, 8-1/4" high. Catalog #: AP0476. Alt. P/N: AP0195-1. Used, excellent condition.

1.3 Hy
1.5 Amp
Dimensions: 5-1/4"L x 5-1/2"W x 4-1/2"H - Flange 2.5" x 2.75" c-c mounting holes

Basler Electric power choke. 1.3 Henry, 1.5 adc. 22 lbs. Made for Gates / Harris broadcast transmitter. Gates P/N: 476-0264-000.

2.5 Hy
700 mA
100/120 Hz

Freed transformer choke.  Hermetically sealed. 2.5 Henry, 700 ma, 100 / 120 cycles. DCR: 23 ohm, 1 kwv. NSN: 5950-00-647-7936.

3 Hy @ 414 mA
15 Hy @ 50 mA
875V wv

UTC swinging choke. 3 Hy @ 414 ma, 15 Hy @ 50 ma. 875 wv. 4-3/8" diameter x 5-1/2"H. NSN: 5950-00-647-7098. Only one available.

3 Hy
15 Amp
6.6 ohm DCR

Magnatran filter reactor. 3 Hy @ 15 dca @ 1200v, 380 cycles. DC resistance = 6.6 ohm, operating volts = 25 kvdc. 59 gallon oil (may contain PCB). 36" x 59" max dimensions. New, never used. Made for Gates Radio. Harris P/N: 476-0339-000. Catalog # 10125, Diag. A91-10125.

4 Hy
850 mA
10k V

Electro Engineering high voltage choke. 4 Hy @ 850 ma, 10kv. RCA transmitter. 5" x 5" x 7"H. 26 lbs. Alt. P/N: E12873. Used, clean.

8 Hy
550 mA
60 ohm DCR

Thordarson filter choke. 8 Hy @ 550 madc. 60 ohms, 6,000v test. Sealed, bottom terminals. 5-3/8" square x 4-5/8"H. Weighs 15 pounds.

10 Hy
600 mA
55 ohms DCR

Electro Engineering high voltage choke. 10 Hy @ 600 ma, 4kv wkg, DCR = 55 ohms. RCA transmitter. 6" x 6" base, 8"H. Alt. P/N: RCA B 3462668. Used, clean.

12 Hy @ 1.1 Amp
5 Hy @ 1.7 Amp
21 ohm DCR

Removed from Wilcox transmitter. A perfect match for the TP-43074 plate transformer. 5kv test voltage. 21 ohm DCR. Made by Thermador Electric for Wilcox. 6-1/4" x 8-1/4" x 9-3/4" high (w/ insulators).

15 Hy @ 60mA
3 Hy @ 6 Amp
111 ohms DCR

Removed from Wilcox transmitters, these bad boys are looking for a new job. An ideal power supply choke for that brute supply. 3kv test voltage. Made by Thermador Electric for Wilcox. 5-1/4" x 6-1/4" x 8-1/4" high (w/ insulators). DCR is 111 ohms. Wilcox P/N: 38057.

17 Hy @ 50 mA
5 Hy @ 500 mA
2kV wv

Manson Labs swinging choke. Hermetically sealed. 17 Hy @ 50 ma, 5 Hy @ 500 ma. 2 kv test. 5-1/2" x 6-1/2" x 4-3/4" high. Used, removed.

33 µH
260 Amp
Dimensions: 6"D core, 8-3/4" c-c bar holes. Copper strap, 0.065" x 1.275". 0.0828"

Transformer. 33 õH @ 260 amps. 6" diameter core, 8-3/4" c-c bar holes. Copper strap, 0.065" x 1.275". 0.0828", equivalent to 1/0 AWG, 105,500 circular mils. NSN: 5950-01-115-9783.

1.65 mH
40 Amp
2500 wv

Regional Mfg. power choke. 1.65 mH, 40 amps, 2500 wv. Measures 4-1/2" x 5-1/4" x 3-3/4"H. Weighs 14 lbs.

4.4 mH
70 Amp
1kV wv

Power reactor. 4.4 mH @ 70 amps, 1kv test. DC resistance: Too low to measure. Terminal strip connection. 0.118" square copper winding (9 AWG). 6" x 4" x 6" high. Weighs 13.5 lbs. NSN: 5950-01-177-9491.

10 mH
13 Amp
0.125 ohms DCR

NJE Corp. open frame power choke. 10 mH, 13 amps, 0.125 ohms DCR. 3-1/4" x 3-3/4" x 4-1/4"H. NSN: 5950-00-941-5538.

11 mH
50 Amp
2.5kV wv

Regional Mfg. special made a handful of these power chokes for Ballantyne. 11 mH, 50 amps, 2.5 kvw. 3/16" square copper wound. 6-1/2" x 11-1/2" x 8" high max dimensions. Weighs 68 lbs. New.

800 mH
1.4 Amp
4 ohms DCR

Western Electric "Retard Coil" power choke. 800 mH, 1.4 amps operating current. 4 ohms DCR. Hermetically sealed. 1/4" - 20 corner studs. 6.719" x 5.188" x 6.5"H. Some boxes are packed with January 31st, 1945 NY Times, but most were stored without boxes and have scratches.
Early Western Electric audio amplifier designs from the 20âs, used through the 50âs, implemented the Retard Coil, later known as a plate choke.  In the early days these were low current and very high quality.  This coil is actually made by Western Electric.  Hard-to-find gems like this are harder for us to find. NSN: 5950-00-147-5303.

Reactor 30H @ 1.3A, 5kV

(CPW) GPN482-0038-000

30 Henry
1.3 Amp
5kV wv

Electro Engineering reactor. Type E16775, 30 - 10 cps. 30 Henry, 5 kvdc, 1.3 adc, 3536 vrms. Auxilliary (5 - 6) terminal winding: 265 vrms @ 0.3 adc. 30 to 10,000 Hz. 11-1/2" x 14" x 17"H. Gates / Harris P/N: 482-0036-000.

925 mH
1 Amp
Dimensions: 4-7/8"L x 5-1/8"W x 4-1/4"H

High current choke. 925 mH @ 1 amp. 4-7/8" x 5-1/8" x 4-1/4". Weighs 11 lbs, 4 oz. Gates P/N: 476-0314-000.