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Hammond HF-1000LP HF low pass filter with 50 ohm coaxial connectors and bottom mounting flange

Hammond HF-1000LP 2,000 W Pep HF Low Pass Filter, 1.8 to 30 MHz

Hammond Manufacturing|

MPN: HF-1000LP

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224-955-1644
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New, with full manufacturer warranty

Key Features

  • Usable passband of 1.8 to 30 MHz
  • 2,000 watts P.E.P. continuous power handling
  • 50 ohm input and output (PL-259 female connectors)
  • Bottom mounting flange with center-to-center mounting holes
  • Compact 2.75 x 2.69 x 8.62 in body
  • Lightweight at 1 lb 5 oz (0.6 kg)
  • Circa 1980 design, no longer in production

The HF-1000LP is a Hammond low pass filter from around 1980, listed by the manufacturer as no longer in production. It is of interest to amateur radio operators and restorers of classic HF station equipment who want the original specifications for this filter.

The usable passband frequency range is 1.8 to 30 MHz. Both the input and output are 50 ohms, each on a connector the manufacturer lists as a PL-259 female connector, so the filter sits in a 50 ohm coaxial line. Power handling is 2,000 watts P.E.P. continuous.

The series table lists the HF-1000LP with a bottom mounting flange; its dimensions are 2.75 in (70 mm) high, 2.69 in (68 mm) wide and 8.62 in (219 mm) deep. Mounting holes are given center to center, with Dim2 at 2.12 in (54 mm) and Dim1 printed on the sheet as "8..188". The filter weighs 1 lb 5 oz (0.6 kg).

Because the HF-1000LP is no longer made, use these published figures (passband, 50 ohm impedance, PL-259 female connectors, power rating and flange dimensions) to confirm a unit matches your existing station before relying on it.

Ideal For

  • Low pass filtering on HF amateur transmitters (1.8 to 30 MHz)
  • Inline 50 ohm coaxial filtering up to 2,000 W P.E.P.
  • Classic Hammond station restoration

Overview

SeriesHF-1000LP Series
Part NumberHF-1000LP
Product TypeLow Pass Filter
Production StatusCirca 1980 - No longer in production

Dimensions

Depth (Bottom Mounting Flange Table)8.62 in (219 mm)
Width (Bottom Mounting Flange Table)2.69 in (68 mm)
Height (Bottom Mounting Flange Table)2.75 in (70 mm)
Mounting Holes (Center To Center) Dim22.12 in (54 mm)

Electrical

Power Handling2,000 watts P.E.P. continuous
Input Impedance50 ohms (PL-259 female connector)
Output Impedance50 ohms (PL-259 female connector)
Usable Passband Frequency Range1.8 to 30 MHz

Packaging & Shipping

Weight1 lb 5 oz (0.6 kg)

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Frequently Asked Questions

What frequency range does the HF-1000LP pass?▾

Its usable passband frequency range is 1.8 to 30 MHz.

How much power can the HF-1000LP handle?▾

It is rated 2,000 watts P.E.P. continuous.

What are the input and output impedance and connectors?▾

Both input and output are 50 ohms, each listed with a PL-259 female connector.

How is the HF-1000LP mounted?▾

It has a bottom mounting flange; the mounting holes are 2.12 in (54 mm) center to center in one direction (Dim2), with Dim1 printed as "8..188" on the sheet.

Is the HF-1000LP still manufactured?▾

No. It is listed as circa 1980 and no longer in production.