HRO Radio Communications Receiver Rx Manual
HRO-5 HRO-5T HRO-5R HRO-M HRO-MX
HRO-MRR HRO-MTM HRO-SR HRO-JR
HRO5 HRO5T HRO5R HROM HROMX
HROMRR HROMTM HROSR HROJR

This manual should also cover the HRO-W HROW, as the primary differences
between the HRO-5T and HRO-W are the S-Meter and the Tropical Anti Fungal coating.


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HRO-5 HRO-5T HRO-5R HRO-M HRO-MX
HRO-MRR HRO-MTM HRO-SR HRO-JR
HRO5 HRO5T HRO5R HROM HROMX
HROMRR HROMTM HROSR HROJR

Should also cover the HRO-W HROW

The HRO Comunication  Receiver was a high frequency super heterodyne suitable for CW and MCW reception throughout the frequency range.

Frequency Coverage
50 to 430 kc/s and 480 to 30,000 kc/s in 9 bands. (coil sets)

Band 1 : - 50 to 100 kc/s.
Band 2 : - 100 to 200 kc/s.
Band 3 : - 180 to 430 kc/s.
Band 4 : - 480 to 960 kc/s.
Band 5 : -  900 to 2050 kc/s.
Band 6 : - 1.7 to4.0 Mc/s.
Band 7 : - 3.5 to 7.3 Mc/s.
Band 8 : - 7.0 to 14.4 Mc/s.
Band 9 : - 14.0 to 30.0 Mc/s.
 



This HRO is Blue
 An original paint job.

All the others I have
seen are Black.

The receiver uses a separate mains power supply capable of supplying 240 volts DC at 70 milliamperes and 6.2 volts AC  at 3.4 amperes, although lower plate voltages down to 135 volts may be used with some sacrifice in performance.

A separate loudspeaker is required.

The band change is by plug in units, which are housed in a separate wooden box as pictured when not in use.

The HRO is a very stable receiver and hence was used extensively at listening stations though out WW2 and for some time later.

The weight of the HRO Receiver including the 9 coil sets is 51 lbs - 23.1kg.



Matching HRO
Blue Coil Pack

 


HRO Chassis Top View HRO Chassis Bottom View HRO Chassis Rear View

HRO Chassis RH View HRO Chassis LH View HRO Coil Pack

The HRO Manual Contains the Following : -

DESCRIPTION
Receiver
Power Unit
Loud Speaker

INSTALLATION

CIRCUIT DESCRIPTION
Special Feature

OPERATING INSTRUCTIONS
Controls
C.W. Reception
L.C.W. Reception
Reception With The Crystal filter
Measurement of Signal Strength

ALIGNMENT
Intermediate Frequency Amplifier Alignment
High Frequency Oscillator Alignment
RF Amplifier Alignment
Tracking of The H.F. Oscillator and R.F. Amplifier Circuits
Band Spread Alignment

MAINTENANCE  FAILURES AND REMEDIES
 
TABULATION OF PARTS

JOINT ARMY-NAVY TYPE DESIGNATIONS


PHOTOGRAPHS

CIRCUIT DIAGRAMS

POWER UNIT TYPES

LOUD SPEAKER TYPES

ADDENDA OR NOTES

Manual and Circuit
available Details Below
On Paper CD or Download

Click Here


Manual covering the : -

HRO-5 HRO-5T HRO-5R HRO-M HRO-MX  HRO-MRR HRO-MTM HRO-SR HRO-JR.
HRO5 HRO5T HRO5R HROM HROMX HROMRR HROMTM HROSR HROJR. 

This manual should also cover the HRO-W HROW, as the primary differences between the
HRO-5Tand HRO-W are the S-Meter and the Tropical Anti Fungal coating.

Manuals are Available Worldwide as a Download on CD or Paper Copy.

Manual 51 A4 pages worldwide

Printed Paper Copy or on CD are Plus Postage.

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We do all we can to provide the very best that is available for you.
But in the unlikely event that any data should not be as you expected.
A refund is always available. Kind Regards Allen and Alanna.


Manuals are Available Worldwide as Paper Copy on CD or as a Download

Thank you for your interest. Allen and Alanna G0RIT
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Revised: January 20, 2016