HMV SMITHS Radiomobile 100 (1946/51)

£1,395.00 ex. VAT
1,674.00 inc. VAT)
Stock Status: In Stock
This radio makes a wonderful upgrade. It has a big case, an internal speaker and a lot of mechanical components to service and restore, so there's a lot of work involved to get it just right. But it's well worth the effort!

Click on the blue ticks below to select additional upgrade options and choose voltage and polarity below before checkout.

Fully restored classic car radio, upgraded with AM/FM 4 x 45W RMS Stereo and AUX input. Select additional upgrade options, voltage and polarity before checkout.
Stock Status: In Stock
Fully restored classic car radio, upgraded with AM/FM 4 x 45W RMS Stereo and AUX input. Select additional upgrade options, voltage and polarity before checkout.
Classic Car Radios for Sale | Agenta Audio
Classic Car Radios for Sale | Agenta Audio
Classic Car Radios for Sale | Agenta Audio
Classic Car Radios for Sale | Agenta Audio
Classic Car Radios for Sale | Agenta Audio

The HMV Smiths Radiomobile Model 100 was manufactured from 1946 through 1951. An AM (MW & LW) radio, it was aimed at Rolls Royce, Bentley and Jaguar owners. It's a large, heavy and very solid car radio with a single internal speaker. These sets make wonderful upgraded units although there is much more work involved than with the smaller less mechanically complex sets. We always strip the set completely and clean every part of the radio, so that once restored it will be good for another 70 years. We shot blast and powder coat the case components in a satin black crackle finish and along with the installation of a 4" Audison PRIMA APX4 full range speaker, this further adds to the quality of the upgrade. 

Finished to an exceptional standard, the upgraded classic car radio has undergone a full cosmetic restoration and is equipped with an AM/FM 4 x 45W RMS Stereo radio with wired AUX input. All the original controls are serviced and integrated. The resulting radio looks and operates exactly like it should as a period correct device, but has up-to-date features and performance. Turn it on and it sounds superb!

The upgraded radio is 12V Negative earth unless another configuration is selected before checkout.

Additional options may be selected for increased functionality:

Bluetooth      Full, totally legal, hands free telephony, audio streaming and voice control

USB                Charges phone, tablet or laptop AND plays MP3 files from a USB memory stick

DAB/DAB+   Receive DAB stations on your classic car radio

Please Note: If purchased for use in the US we will substitute an HDR (High Definition Radio) unit for the DAB/DAB+ converter for at no extra cost. Simply select the DAB / HDR option as normal and we will make the necessary adjustments.

All of these additional options are fully integrated into the radio, so the existing radio controls are used to handle phone calls or move between audio tracks etc. 

This radio will be built to order according to your specifications.

If you have any special requirements with regard to the radio or your project schedule, just let us know and we'll do our best to accommodate.

Please allow 4 to 6 weeks form order for us to complete the work and ship your radio to you. We'll keep you informed of progress along the way.

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Andreas Swadlo -

Fantastic quality wrapped in a perfect period radio

This is the second radio of this type that I have purchased from Colin. (The first went when i sold my last car). This one wa bought for my latest acquisition - a 1947 Jaguar my iv and as such it is exactly the right radio. The restoration quality is outstanding - faultless - and yet the (unseen) modern technicals inside bring the radio bang up to modern standards. Particularly impressive is how the modern functions are all integrated into the original buttons so that nothing appears different to what it would have looked like in 1947; I chose all the extras - why not? If you are spending this much on a brilliantly restored period radio then you might as well future proof it totally. Very happy with this purchase as well as the personal service from Colin who kept me advised on restoration and build progress together with photos. Highly appreciated.

Product Features
  • HMV Smiths Radiomobile Model 100
  • Manufactured 1946 - 1951 
  • 4 x 45W RMS AM/FM Stereo Radio installed
  • Wired automatic AUX input
  • Single internal 4" Audison PRIMA APX4 Full Range loudspeaker
  • Black Crackle powder finish
  • Rolls Royce, Bentley and Jaguar owners
  • 1 year limited warranty
Voltage and Polarity

Your car will have either a 6 Volt or a 12 Volt battery and it will be either Positive earth or Negative earth. We need to know the voltage and polarity of your car so we can build you a radio that will work in it.

Our standard build is for 12 Volt, Negative earth vehicles. If yours is NOT 12V Negative earth you will need to select the appropriate Voltage and Polarity from the drop down box and we will build a converter into your radio so it will work correctly in your car. 

Check your battery, or ask an engineer if you're not sure. Polarity refers to which terminal of the battery, positive or negative, is connected to the car body, and hence is the earth or ground terminal. 


The converted Radiomobile 100 can be used with up to 4 speakers, each driven by one of 4 separate channels in the upgrade. However, it will operate perfectly well with the number of speakers you feel is correct for your car. If you use only the single internal speaker already fitted in the radio, the unit will automatically blend Left and Right Stereo channels into a Mono feed so there will be no compromise in sound quality. Each time the radio is turned on it checks to see if there's a speaker attached to each channel and any unused channels are automatically switched off. This means that an additional three speakers can be added without having to re-configure the radio in any way.

We would always recommend that new speakers are fitted with your converted radio. Go to our Accessories section to select from the high quality speakers we have on offer there. 


Our AM, FM and DAB radio upgrades have all been optimised to operate using the original period aerial on the vehicle. No additional aerial, other than the original, is required. 

Please make sure the original aerial is functional and if telescopic, it's clean and operates smoothly. If you need to source an aerial, we have a number of options available depending on the age and type of car and whether you want hidden, in-cabin or a powered aerial. Check out our aerials in the 'Accessories' section here.

Installation and Operating Guide

A comprehensive installation and operating guide is supplied with every radio. This guide will be tailored to your individual set and will include full instructions for the operation of the radio, including any installed options.

Installation is straightforward, but we always recommend that it is carried out by a qualified and experienced engineer. However, if there are any issues or questions raised during installation we are happy to help, so please do get in touch.


Your re-engineered and upgraded radio is covered by a comprehensive 1 year warranty from the date of service.  

Please be aware that our warranty is offered on the understanding that the set has been correctly installed in accordance with the installation guide supplied and has not been tampered with in any way.

If you have any problems with the radio at all, please do get in touch and we will work with you to find a resolution. Many issues can be solved on the phone, but if we do need to have the radio returned, we will arrange a collection at our expense. All you have to do is package it securely and hand it to the courier. We will repair the set and get it back to you as quickly as we can.

Because we focus on attention to detail and quality in everything we do, we have rarely had a radio returned. Consequently, we feel confident in offering our customers this comprehensive 1 year warranty. We want you to have total confidence in us and peace of mind when you purchase and enjoy your classic car radio upgrade.

Technical Specifications

Aurora FMR-2.7 Specifications

FM Receiver:

Frequency Range:   87.5-108 MHz (Worldwide except Japan)    76.0-95.0 MHz (Japan)

Channel Spacing:    200kHz (America’s)     100kHz (all other regions)

AM Receiver:

Frequency Range:    530-1710 kHz (America’s)    531-1611 kHz (all other regions)

Channel Spacing:    10kHz (America’s)     9kHz (all other regions)

Audio Output:

Speaker Impedance: 2-45 Ohms

Output Power:    4 X 45W into 4 ohms @14.4V maximum (EIAJ)

                             2 X 75W into 2 ohms @14.4V maximum (EIAJ)

Fully short circuit protected