National Company HRO-M

Desktop Shortwave receiver

Specs Manuals (0) Reviews (0) Prices (0) Compare

Front view (Courtesy of N4TRB) - Submitted by elmer

Find National Company HRO-M rigs and spare parts on eBay

Find the National Company HRO-M on Amazon
We receive a small fee if you buy through these links, which helps support this site. Thank you!

Basically the same as the HRO Sr series except the standard coils were general coverage only. It used glass tubes and a plug-in crystal.

The frequency range is determined by use of removeable, slide-in coil packs:
Type J = 50 - 100KHz
Type H = 100 - 200KHz
Type G = 180 - 430KHz
Type F = 480 - 960KHz
Type E = 900 - 2050KHz
Type JD = 1.7 - 4.0MHz
Type JC = 3.5 - 7.3MHz
Type JB = 7.0 - 14.4MHz
Type JA = 14.0 - 30.0MHz

Original cost: USD 230.-

General characteristics

HAM bands: ?
Frequency stability: ?
Tuning steps: ?
Memories: ?

Receiver

RX-range: 0.05-30 MHz depending on coil pack
Modulations: AM CW
Sensitivity: ?
Selectivity: ?
Filters: ?
Receiver system: Single conversion
IF-frequencies: ?
Image rejection: ?
Audio output: Requires external output transformer of 7,000 ohms impedance and external speaker.

Connections

Antenna: -
Impedance: 50 Ω
Other: -

Electrical

Power requirements: ?
Current drain RX: ?
TX: -

Physical

Dimensions (w×h×d): ?
Weight: ?
Form factor: Base Station
Manufactured: Between 1934 and 1943 in USA

Other features

Usage: Amateur / Ham radio operators
Features + options: -
Accessories: -
RigReference ID: 5070
MPN: NATIONAL-COMPANY-HRO-M

We do our best to be accurate, but if you've spotted something wrong or incomplete, please let us know!

Manuals, diagrams and brochures

: No documents available for this particular model.

: Upload relevant documents

Reviews & stories

Do you know this rig? Tell us something about it!

New and second-hand prices

Estimating the value of a rig can be challenging. We collect prices paid by real hams over the years to help you estimate the value of a used National Company HRO-M. Just bought or sold this model? Let us know what you traded it for and help other ham operators!

These estimates are based on the following prices:

Year	Historic price	Condition	Submitted by

Login or Register to submit prices

Links & tools

About

RigReference.com aims to become the most comprehensive reference guide for ham radio equipment. If you have any questions or suggestions, or if you'd like to participate, please get in touch.

Buy me a coffee