Gizmos by Category

Sinclair Stuff

Cameras & Optical

Clocks Watches Calcs

Computers & Games

Geiger Counters & Atomic Stuff

Miscellaneous & Oddities

Phones & Comms

Radio & Audio

Tape Recorders & Players

Test & Scientific Instruments

TV & Video

 

Psst...looking for cheap 

nuclear stuff?

Gizmos A - Z

Accoson Sphygmomanometer

Acos SLM3 Sound Level Meter

Acoustic Coupler

Advance PP5 Stabilised PSU

Aibo ERS-111 Robotic Pet

Aiwa LX-110 Linear Turntable

Aiwa TP-32A Tape Recorder

Alcatel Minitel 1 Videotex

Aldis Folding Slide Viewer

Alpha-Tek Pocket Radio

Airlite 62 Military Headset

Airlite 71 Aviation Headset

Aitron Wrist Radio

Aiwa TP-60R Tape Recorder

AKG K290 Surround 'Phones

Amerex Alpha One Spycorder

Amstrad em@iler

Amstrad NC100 Notepad

AN/PRC-6 Walkie Talkie

Apple Macintosh SE FDHD

Amstrad CPC 464 Computer

AlphaTantel Prestel

Astatic D-104 Desk Microphone

Atari 2600 Video Game

Atari 600XL Home Computer

Audiotronic LSH 80 'Phones

Avia Electronic Watch

Avid Pneumatic Headphones

AVO Multiminor

AVO Model 8 Multimeter

Bambino Challenger Radio

Bandai Solar LCD Game

Barlow Wadley XCR-30 Radio

B&O Beocom 2000 Phone

Baygen Freeplay Lantern

Bellwood, Bond Spycorder

Benkson 65 LW/MW Radio

Benkson 68 Mini Tape Recorder

Benkson 79 Mini Tape Recorder

Benkson 92 Baby Sitter Alarm

Betacom BF1 Pianotel Phone

Betacom CP/6 Ferrari Phone

Bigston PS-5 Flat Panel Speakers

Binatone Digivox Alarm

Binatone Long Ranger 6 CB

Binatone Mk6 Video Game

Binatone Worldstar Radio

Binotone Radio Binoculars

Bio Activity Translator

Biri-1 Radiation Monitor

Bolex Paillard 155 Cine Camera

Bowmar LED Digital Watch

Boots CRTV-50 TV,Tape, Radio

Beseler PM2 Color Analyzer

British Gas Mk 2 Multimeter

Brolac Camera In A Can

Brydex Ever Ready Lighter

BSB Squarial

BT CT6000 Moneybox Payphone

BT Genie Phone

BT Linesmans Phone 282A

BT Rhapsody Leather Phone

BT Slimtel 10 HT2A

Cambridge Z88 Computer

Candlestick Telephone

Canon Ion RC-260 Camera

Cartex TX-160 Multiband Radio

Casio VL-Tone Keyboard

CD V-700 Geiger Counter

CD V-715 Survey Meter

CDV-717 Survey Meter

CD V-742 Pen Dosimeter

Central C-7980EN Multimeter

Channel Master 6546

Chinon 722-P Super 8 ciné

Citizen Soundwich Radio Watch

Citizen ST555 Pocket TV

Clairtone Mini Hi Fi Radio

CocaCola Keychain Camera

Coke Bottle AM Radio

Commodore 64 Home PC

Commodore PET 2001-N

Companion CR-313 Walkie Talkies

Computer Novelty AM/FM Radio

Compact Marine SX-25

Concord F20 Sound Camera

Connevans LA5 Loop Amplifier

Coomber 393 Cassette Recorder

Coomber 2241-7 CD Cassette

Contamination Meter No.1

Cosmos Melody Organ

Craig 212 Tape Recorder

Craig TR-408 tape recorder

C-Scope ProMet II Detector

Dansette Richmond Radio

Daiya TV-X Junior  Viewer

Dancing Coke Can

Dawe Transistor Stroboflash

Decca RP 205 Record Player

Decimo Vatman 120D Calc

Diamond Rio Media Player

Dictograph Desk Phone

Direct Line Phones x2

Dokorder PR-4K Mini Tape

DP-66M Geiger Counter

Duvidal FT-66 Tape Recorder

Eagle Ti.206 Intercom

Eagle T1-206 Intercom

Eagle International Loudhailer

EhrcorderTP-421 Tape Recorder

Electrolysis Cell

Electron 52D Spycorder

Electronicraft Project Kit

Ed 'Stewpot' Stewart Radio

EMS Stammering Oscillator

Ericsson Ericofon Cobra Phone

Etalon Luxor Light Meter

Euromarine Radiofix Mk 5

Exactus Mini Add Calculator

Fairylight Morse Set

FEP Microphone & Earphone

Ferguson 3247 Tape Recorder

Ferguson FC08 Camcorder

Ferguson FHSC 1 Door Cam

Fi-Cord 101 Tape Recorder

Fi-Cord 202 Tape Recorder

Field Telephone Set J

Fidelity HF42 Record Player

Fisher-Price 826 Cassette

Fleetwood Globe AM Radio

Fonadek Telephone Amplifier

Franklin LF-390 Guitar Radio

Gaertner Pioneer Geiger Counter

G&E Bradley CT471C Test Meter

Garmin GPS III Pilot Satnav

GE 3-5805 AM CB Radio

GE 3-5908 Help CB Radio

GEC C11B2 Electricity Meter

GEC Transistomatic

GEC Voltmeter

General Radiological NE 029-02

Gfeller Eiger Phone

Giant Light Bulbs

Giant Watch-Shaped  Radio

Gowlland Auriscope

GPO Headset No. 1

GPO Keysender No 5

GPO RAF Microphone No. 3

GPO Telephone Series 300

GPO Telephone Type 746

GPO 12B/1 Test Meter

GPO Trimphone

GPO Ring Microphone No 2

Gramdeck Tape Recorder

Grandstand Astro Wars

Grandstand Video Console

Grundig EN3 Dictation

Grundig Memorette

Grundig TK-141 Tape Recorder

H&G Crystal Radio

Harrier Pilot AM/FM/Air Radio

Hacker Radio Hunter RP38A

Hacker Radio Mini Herald

Hanimex Disc Camera

Harmon Kardon HK2000

Harvard Batalion Radio

Shell Headset 5965-99-100

Heathkit GR-70 Multiband Radio

Henica H-138 Radio Lighter

Hero HP-101 Intercom

Hitachi MP-EG-1A Camcorder

Hitachi TRK-8015 Cass Recorder

Hitachi WH-638 Radio

Hitachi VM-C1 Camcorder

HMV 2210 Tape Recorder

Homer KT-505 Phone Amplifier

Homey HR-408 Recorder

Horstmann Pluslite Task Lamp

Ianero Polaris Spotlight

Ingersoll XK505 TV, Radio

International HP-1000 Radio

Internet Radio S-11

IR Binoculars No 1 Mk 1

ITT KB Super AM/FM Radio

Ivalek De Luxe Crystal Radio

James Bond TV Watch

Jasa AM Wristwatch Radio

Juliette LT-44 Tape Recorder

Jupiter FC60 Radio

JVC GR-C1 Camcorder

JVC GX-N7E Video Camera

JVC HR-C3 VHS-C VCR

JVC HR-3300 VHS VCR

King Folding Binoculars

Kodak Brownie Starflash

Kodak 56X Instamatic

Kodak 100 Instamatic

Kodak Disc 6000

Kodak EK2 'The Handle'

Kodak EK160 Instant Camera

Kodak Pony 135

Koss ESP-6 Headphones

Kvarts DRSB-01 Dosimeter

Kvarts DRSB-88 Dosimeter

Kvarts DRSB-90 Geiger Count

Kyoto S600 8-Track Player

La Pavoni Espresso Machine

Le Parfait Picture Frame Radio

Linwood SImple Siren Car Alarm

Macarthys Surgical AM Radio

Magnetic Core Memory 4kb

Maplin YU-13 Video Stabilizer

Marlboro Giant  AM Radio

Mattel Intellivision

Maxcom Cordless Phone

McArthur Microscope OU

Mehanotehnika Intercom

Memo Call Tape Recorder

Merlin Hand-Held Game

Micronta 22-195A Multimeter

Micronta 3001 Metal Detector

Micronta S-100 Signal Injector

Microphax Case II Fiche

Midland 12-204 Tape Rccorder

Mini Com Walkie Talkies

Mini Instruments 5.40 Geiger

Minifon Attaché Tape Recorder

Minolta 10P 16mm Camera

 

Widget Of The Week

My Power 25-Watt Megaphone, 1970

Sooner or later it will come in handy. At least that’s what I tell myself (and the missus) because quite frankly its difficult to justify owning a megaphone, let alone two of them, but mark my words, one day… To be fair megaphones, also known as loud hailers and bullhorns, do have their uses. The plus points include being a powerful crowd controlling tool at impromptu and low-rent (PA-less) public events and gatherings. They’re also useful for persuading bank robbers to come out with their hands up, and persuade twitchy roof-jumpers not to do it. I can also vouch for their efficacy for making trespassing cats to vacate your property. On the minus side they’re a very quick way of annoying next-door neighbours, and they cost a bomb to run, draining a set of eight ‘C’ cells in just a few minutes; at least that’s one of the major drawbacks of this My Power 25-watt megaphone, especially when playing with the built-in siren.

 

This model, which superficially looks a lot like the Eagle International Loudhailer, has a maximum output of 25 watts. It may not sound much, but the horn is designed to concentrate and direct the sound and according to some specs I found for a similar model, it can be heard up to a kilometre away. You’ll believe it if you are ever daft enough to stand directly in front of it… The similarities to the Eagle and many other loud hailers are mostly due to the fact that over the years megaphones have evolved into this familiar form, with the horn speaker at the front, a microphone at the back, and a handle with a trigger switch at the balance point, under the middle section, which houses the amplifier and batteries. On this model, and many others, the microphone is detachable, so the megaphone can be conveniently worn on the hip, slung from its shoulder strap. The mike also houses a second microphone capsule. This is wired to in anti-phase (back to front) to the main microphone, presumably as a feedback reduction measure. Whilst we’re with the microphone, it also has a rotary level control, which turns out to be the primary weapon against howl-round. The best feature, however, is the siren. It’s a real old-school US police siren, none of your trendy two-tones or whoop-whoop jobbies, it’s a proper rising and falling howl, guaranteed to get your audience’s attention. 

 

Opening the battery cover reveals a pair of hefty power transistors. These are mounted on a removable module that contains the amplifier PCB and the contacts for the batteries. There are 8 transistors in a simple push-pull configuration and the fact that most of them are germanium types puts the probable date of manufacture somewhere between the mid sixties and late seventies. Build quality is good; it’s designed to withstand the knocks and drops of portable use in the great outdoors so a lot of attention has been paid to keeping out moisture. It is very easy to use; there’s no need to consult the manual, not that this one came with any, though it might have come in handy when I first tried to power it up.

 

I find it wise to assume that stallholders at car boot sales almost always tell porky-pies when it comes to the condition of their wares. I wasn’t surprised, therefore, when the nice old lady who I bought this one from for £3.00, solemnly promised that it was in good working order when she left the house that morning, in spite of one of the battery contact springs being clearly missing... In my experience stallholders peddling battery-powered devices that actually work will put in a set of batteries, to prove the point.

 

Obviously it didn’t it work and there was no way it could have done so for at least a decade, thanks to my old enemy, a leaky battery. It hadn’t been too serious, though and a few drops of acidic goop had eaten away a

rivet holding the spring in place. The leaky battery must have been removed fairly quickly after it had been discovered so the damage was limited. There had clearly been no attempt to use it for some years and the contact pins on the bespoke 2-pin external power connector were coated with a thin film of rust. That was confirmed by several generations of dead spiders inside the unit (what do they eat?). After a general clearout I hooked it up to a bench power supply and it gradually came back to life as the electrolytic caps re-formed (another sure sigh it had been dormant for years). The amp perked up quite quickly but the siren took a while to get going before it managed a continuous howl. I was able to make up a new contact spring from one salvaged from an old torch. It took a while to sort out the battery power, though due to some light corrosion on the other contact rivets and pads but now it’s fully functional, very loud and ready to go.

 

What Happened To It?

The My Power brand, just about visible on a faded sticker on the side of the main unit, is unknown to me or -- it seems -- the Internet. I am inclined to think that it came from the same factory making Eagle branded products and I have seen several near identical models, but with different names and logos suggesting it has been widely badge-engineered. This isn’t a surprise and it is likely that there are now, and has only ever been a handful of companies making what is a fairly specialised product with a very limited market.

 

Over the years megaphones haven’t changed very much and modern ones are not that different to this one, though for a given size they tend to pack in more powerful amplifiers and extra features, like a recording facility. Price wise they cost about the same nowadays, relatively speaking, as they did 50 years ago. That is reflected in the current value of vintage models, which is next to nothing to maybe £20 to £30 for one in good shape that still works. Real old-timers, from the 40s or 50s do have some value, though, but they appear to be few and far between on auction sites like ebay. There does seem to be a small collectors market in the US, though but the big money is reserved for unpowered – i.e. shout-through – megaphones adorned with advertising slogans, sports team logos, TV and movie characters and so on. If you want to become a collector the good news is you won’t find too much in the way of competition, but you’ll be doing it for the love of the technology, rather then a way to make money. Nevertheless, never pass up the chance to own one – especially if it is selling for less than a fiver. A megaphone is one of those things that you think you’ll never need, until the day you do, then you’ll wonder how you ever got by without one.


First Seen:             1970?

Original Price:       £30?

Value Today:         £10.00 (1018)

Features                25 watts output, 8-transistor amplifier, built-in siren, detachable feedback cancelling microphone, 2 x PTT switches (pistol grip & microphone), mic volume, external power socket, carry strap

Power req.                        8 x 1.5-volt C cells

Dimensions:                      370 x 225 x 300mm

Weight:                             1.9kg

Made (assembled) in:       Japan

Hen's Teeth (10 rarest)      7



Web

dustygizmos

Dusty Navigation

About Dustygizmos

Crystal Radios

Transistor Radios

Mini Tape Recorders

Spycorders

Sinclair TVs

Manuals

Tape Recorder Gallery

A - C    D- M     N - Z

 

 

 

 

 

 

 

More Gizmos A - Z

Minolta-16 II Sub Min Camera

Minolta XG-SE 35mm SLR

Minolta Weathermatic-A

Minox B Spy Camera

Mohawk Chief Tape Recorder

Monatone D 5151 AM Radio

Motorola 5000X Bag Phone

Motorola 8500X ‘Brick’

Motorola Micro TAC Classic

MPMan MP-F20 MP3 Player

Music Man Talking Radio

Mystery Microphone

Nagra SN Tape Recorder

National Hyper BII Flashgun

National RQ-115 Recorder

National Panapet AM Radio

National Toot-A-Loop Radio

NatWest 24 Hour Cashcard

Nife NC10 Miner's Lamp

Nimslo 3D Camera

Nivico JVC TR-514U Recorder

NOA FM Wireless Intercom

Nokia 9210 Communicator

Novelty AM Radio Piano

Nuclear Enterprises PDM1

Olympia DG 15 S Recorder

Onkyo PH-747 Headphones

Opax Stereo Microscope

Optikon Binocular Magnifier

Oric Atmos Home PC

Panda & Bear Radios

Panasonic AG-6124 CCTV VCR

Panasonic EB-2601 Cellphone

Panasonic Toot-A-Loop Radio

Panasonic RS-600US

Parrot RSR-423 Recorder

Penguin Phone PG-600

Pentax Asahi Spotmatic SLR

Philatector Watermark Detector

PH Ltd Spinthariscope

Philips 13RF833 Turntable

Philips CD 150 CD Player

Philips Electronic Kit

Philips EL3302 Cassette

Philips EL3586 Reel to Reel

Philips GF300 Record Player

Philips N1500 VCR

Philips PM85 Recorder

Philips P3G8T/00 Radio

Philips VLP-700 LaserDisc

Philips SBC RU 098 TV Remote

Phonotrix Model 1 Recorder

Pifco 888.998 Lantern Torch

Pion TC-601 Tape Recorder

Pioneer Hawaiian Phonograph

PL802/T Semconductor Valve

Plessey PDRM-82 Dosimeter

Polaroid Automatic 104

Polaroid Land Camera 330

Polaroid Supercolor 635CL

Polaroid Swinger II

Polavision Instant Movie

POM Park-O-Meter

Prinz 110 Auto Camera

Prinz Dual 8 ciné Editor

Prinz TCR20 B&W TV

Promax GV-298 Pattern Gen

Psion Series 3a PDA

Psion Organiser II XP

Pye 114BQ Portable Radio

Pye Q6 Two-Band Radio

Pye TMC 1705 Test Phone

R2D2 Lazerbuilt Novelty Phone

Quali-Craft Slimline Intercom

Rabbit Telepoint Phone

RAC Emergency Telephone

Racal Acoustics AFV Headset

Radofin Triton Calculator

Raytheon Raystar 198 GPS

Realistic PRO-62 Scanner

Realistic TRC 209 CB

Renown 402 Tape Recorder

ReVox A77 Tape Recorder

Roberts R200 MW/LW Radio

Rolling Ball Clock

Rolls Royce Car Radio

Ronco Record Vacuum

Royal/Royco 410 Recorder

Runbaken Ardwick Batt Test

Sanyo G2001 Music Centre

Sanyo MC-1/1A Mini Recorders

Sanyo MR-115 Tape Recorder

Sanyo M35 Micro Pack

Satellite AM/FM Radio

Satvrn TDM-1200 Sat Box

Science Fair 65 Project Kit

Seafarer 5 Echo Sounder

Seafix Radio Direction Finder

Seiko EF302 Voicememo

Seiko James Bond TV Watch

Sekiden SAP50 Gun

S.G. Brown Stick Earphone

Shackman Passport Camera

Sharp CT-660 Talking Clock

Sharp RD-303E Tape Recorder

Shira WT106 Walkie Talkies

Shira WT-605 Walkie Talkies

Shogun Music Muff

Silma 120M Projector

Simpson 389 Ohmmeter

Sinclair Calculator

Sinclair Black Watch

Sinclair FM Radio Watch

Sinclair FTV1 Pocket TV

Sinclair Micro-6 Radio

Sinclair Micro FM Radio

Sinclair Micromatic Radio

Sinclair Micromatic Kit (Unbuilt)

Sinclair MTV1A Micovision TV

Sinclair MTV1B Microvision TV

Sinclair PDM-35 Multimeter

Sinclair System 2000 Amp

Sinclair Super IC-12

Sinclair X1 Burtton Radio

Sinclair Z-1 Micro AM Radio

Sinclair Z-30 Amplifier

Sinclair ZX81

Smiths ECS Process Timer

Smiths SR/D366 Gauge Tester

Speak & Spell

Spirit Of St Louis Radio

Sony Betamovie BMC-200

Sony CFS-S30 'Soundy'

Sony DD-8 Data Discman

Sony CM-H333 Phone

Sony CM-R111 Phone

Sony FD-9DB Pocket TV

Sony M-100MC Mic'n Micro

Sony MDR3 Headphones

Sony MVC-FD71 Digicam

Sony TC-50 Recorder

Sony TC-55 Recorder

Sony TR-55 Camcorder

Sony Walkman TPS-L2

Sony Rec Walkman WM-R2

Speedex Hit Spy Camera

Standard Slide Rule

Standard SR-V07 Miniature TV

Starlite Pocket Mate Tape

Staticmaster Static Brush

Steepletone MBR7 Radio

Stellaphone ST-456 Recorder

Stuzzi 304B Memocorder

Stylophone-

Talkboy Tape Recorder

Tamrom Fotovix TF-56WE

Taylor Barograph

Tasco SE 600 Microscope

Teacup Novelty AM Radio

Technicolor Portable VCR

Telephone 280 1960

Telequipment Servicescope

Telex MRB 600 Headset

Thunderbirds AM Can Radio

Tinico Tape Recorder

Tokai TR-45 Tape Recorder

Tomy Electronic Soccer

Tohphonic HP-2T Intercom

Toshiba HX-10 MSX Computer

TR Gooseneck Microphone

Triumph CTV-8000 5-inch TV

TTC C1001 Multimeter

Uher 400 RM Report Monitor

UT-66 Video Sender

Vanity Fair Electron Blaster

Vextrex Video Game

Videomaster Superscore VM8

VideoPlus+ VP-181 Remote

Vidor Battery Radio

View-Master Stereo Viewer

Viking Sol Invictus Metal Detector

Vivalith 301 Heart Pacemaker

VTC-200 Video Tape Cleaner

Waco Criuser AM Radio

Waco TV Slide Lighter

Wallac Oy RD-5 Geiger Counter

Weller X-8250A Soldering Gun

W E Co Folding Phone

White Display Ammeter

Wittner Taktell Metronome

Wondergram Record Player

Yamaha Portasound PC-10

Yashica AF Motor 35mm

Yupiteru MVT-8000 Scanner

`

All information on this  web  site  is provided as is without warranty of any kind. Neither dustygizmos.com nor its employees nor contributors are responsible for any loss, injury, or damage, direct or consequential, resulting from your choosing to use any of the information contained  herein.

Copyright (c) 2006 - 2018 dustygizmos.com

 

 

counter statistics