Coil - Miniature adjustable coil, 70, oscillator

Coil - Miniature adjustable coil, 70, oscillator

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Coil is similar to Miller number 70-OSC oscillator coil. Their small physical size and the fact that they can be adjusted to the inductance required make these coils ideally suited for replacement in broadcast band receivers. The 70 Oscillator coil has a primary and a tapped secondary. These coils are for use in all common padded and unpadded oscillator circuits.

Specification Sheet:

Specification Sheet
Item ID:
Product Measurements by Type
Frequency Range540 Hz - 1,600 KC
Intermediate Frequency (I.F.)455 Kc
Resistance, lug 1 to 25 Ω
Resistance, lug 1 to 36.2 Ω
Resistance, lug 4 to 52.5 Ω
Packaging Information
Packaging Dimensions3.3 in. × 1 in. × 1 in.
Weight (Packaging)0.02 lbs.

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Specifications, Files, and Documents

PNG: Specification Sheet Specification Sheet9.4 KB

Questions and Answers

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Asked by markladams on July 29th, 2016.
Matt H.
August 2nd, 2016
Staff Member
This is a 5 lug coil with a I.F. of 455 kc. It will work in an application that calls for these specifications.
October 13th, 2018
I have used one of these oscillator coils on a Silvertone console with an I.F. frequency of 175 kHz with fantastic results.
Asked by Anonymous on February 9th, 2017.
Matt H.
February 16th, 2017
Staff Member
You will need tool # 9440 from our Alignment Kit. Do a search for SKU: S-T18-530.
Asked by junkman on March 8th, 2020.
March 12th, 2020
Staff Member
This coil has a tap on the #2 lug. This is not always used. Please see the spec sheet above for diagrams showing use without this tap.
Asked by Anonymous on August 9th, 2020.
August 10th, 2020
Staff Member
The red dot is simply used to orient what number lug each lug is.

Product Reviews

4.67 out of 5 based on 15 reviews
- February 16th, 2021
5 out of 5

Just the right thing for restoring old radios that have damaged coils.
The tuning slug allows you to adjust the inductance which can vary with radio brands.

- December 13th, 2020
5 out of 5

After searching high and low for a suitable replacement for the old unobtanium Heathkit part 40-588, I settled on trying the P-C70-OSC. This coil was needed to work as a local oscillator to feed a mixer and convert the 455 KHz IF of a receiver to the 350 KHz IF of the HO-13 Panadapter. It worked the first time I applied a test signal. Just had to adjust the slug to center the pip.

- September 22nd, 2020
5 out of 5

Haven't put it in yet,but it arrived promptly & well packaged.Great Company to deal with.

- July 31st, 2019
5 out of 5

Worked perfectly on a 1950s AA5 radio with 12BE6 tube.
Use the ferrite slug to adjust the low end of the dial.
Then use the oscillator trimmer on the ganged capacitor for the upper end.
Was able to achieve perfect tracking.

- March 12th, 2019
4 out of 5

Worked on a 1937 radio

- January 29th, 2019
5 out of 5

Exellent gain, this osc. coil works good in Am/mw mini transmitters as well as being a good coil for regenerative radios.

- August 1st, 2018
5 out of 5

Mice got to the oscillator coil in a Magnavox CR-216 chassis. Used this as a replacement and it worked just fine. No trouble with alignment.

- April 4th, 2018
5 out of 5

All of the products I have bought over the years have always been top notch, work as expected and has the right value.

- December 1st, 2017
1 out of 5

I had multiple failures in these coils, several have brokem while I assembled my device and another while I adjusted it.
In addition the allen key adjustment is Difficult to adjust with standard tools, because the metal in the allen keyeffects the inductance of the coil.

- September 29th, 2016
5 out of 5

This item worked perfectly on a Philco 42-PT-7 that I am restoring. Very satisfied.