Can i change from mph to mfj

Automatically shuts down and bypasses your amp if needed. Most feature overtemperature sensing that bypasses amplifier when safe operating temperatures are exceeded; heavy duty heatsinks finned on 3 sides; and wide input power range. These amps were designed for two-way radio signal commercial, mobile, or fixed location use.

All are FCC type accepted. They also have a heavy duty heatsink that spans entire length of cabinet, 50 Ohm impedance input and output, Get Watts out for 10 W in. For 0. Others use RC-1, call mirage to verify. Custom wrap around heatsink provides excellent heat distribution -- runs cool for extra long life. Reverse polarity protection can save your amp and your pride if you connect power backward. Low input SWR keeps your handheld safe from overheating.

LEDs show On-Air, receive preamp on and power on. Free mobile mount bracket, hardware. Like BG but FM only, less preamp, mobile bracket.

Requires Reverse Polarity protection. Reach distant repeaters. Log onto faraway packet bulletin boards. The results? Free 3 foot handheld to BG coax cable and mobile bracket! Remote keying jack. Draws 15 Amps at VDC.

Selectable gain prevents receiver intermod. Less than 0. Choose In-shack or Mast-Mount models below. Remote coupler. Compact meter features peak and average, forward and reflected power reading and SWR. Covers MHz, Watts, selectable ranges: 5, 20, Watts. Talk further, longer, clearer! Fully protected by high SWR protection. Includes mobile mounting bracket. An input level switch selects proper input power from your HT or mobile radio.

Low power input for handheld radios, mW to 10 Watts. High power input for mobile radios, 10 Watts to 50 Watts. Custom wrap-around heatsink gives excellent heat dissipation. Get 35 Watts out with just 4 Watts in! Works with HTs to 7 Watts. Draws 7 Amps at Full featured CW Keyer Kit is the best electronic keyer bargain in radio!

Self-completing dot-dashes and dotdash memory forgive timing errors. Sidetone Hz has LM audio amp for external speaker. Sleep Mode battery saver. Use 9V battery. Simple skill level. Crystal radio set Kit lets you relive the experience of early radio pioneers.

This baby really works! Wind your own inductor, wire up the earliest radio circuit without soldering a thing and listen to the magic of radio that needs no power. Put up an antenna, connect a ground. Stations will come in amazingly loud and clear. Has antenna wire, earphone. Simple level. Aircraft Receiver Kit tunes entire voice aircraft band MHz.

Picks up air traffic miles away. Great way to learn about aviation. Carry on entire QSOs by just pressing memory message buttons. True sinewave sidetone with soft rise and fall time eliminates harsh keyclicks. Shortwave Receiver Kit lets you listen to the world! Vernier reduction drive, smooth regeneration control, RF stage. Includes all metal cabinet.

Intermediate skill level. Low noise, high gain RF preamp gives you excellent 0. Air variable tuning capacitor has reduction. Dual conversion superhet provides selectivity and stability. Automatically eliminates squelch tails. Built-in speaker, squelch, tone, volume controls. Includes crystal for popular QRP frequency. Covers entire band or tailor to cover desired portion. Moderate skill level.

Transmit and Receive switch. Connect receiver. Comprehensive Soldering Course Kit. Designed for schools and individuals. Includes theory, quizzes, PC board and components for soldering practice.

Be proud of who you are! Listed in the boy scout badge handbook, this is a great evening project for your boy scout troop and a great way to introduce them to ham radio and basic electronics. Each covers the entire FM sub-band and runs off your 9V battery. Plug in speaker or headphones for clear reception. AM Radio Transmitter Kit lets you set up your own AM station and broadcast crystal clear programming from your studio with you as the disc jockey.

Choose clear frequency from KHz. Standard line level or microphone input. Easy connection. Audio level adjustment. Realistic grand movie theater sound! Use to assist hard-of-hearing. Frequency adjusts MHz. Tune frequency from Hz. Notch is an outstanding 50 dB. Eight poles gives super steep skirts with no ringing. Plugs into phone jack to drive phones. Center frequency: Hz. Up to 15 dB. Use VDC, mA max. Super SSB Audio Filter Kit improves readability with 8 poles, optimizes audio bandwidth, reduces SSB splatter, low, hi-pitched interference, hiss, static crashes, background noise.

Use 9 Volt battery. Baby monitors, cordless phones, walkie-talkies, wireless intercoms and more! Electronic tuning covers just the 49 MHz band. Emergency and Business Band Receiver lets you gather news first hand -- tune in local fire, police, ambulance, business, etc. Voice Activated Recorder Switch Kit can remotely and auto record conversations, speeches. Plug in remote recorder jack and it activates when it hears speech.

Jumper select reactance or direct FM modulators. Crystal controlled x8 frequency multiply. Great low-noise performance, immunity from damaging electrostatic discharge. High-performance 2 Meter Preamp Kit pulls weak signals out of noise. Plug in a portable CD player and a pair of 8 Ohm speakers.

Fill your room with music. Includes 19 kits on this page. Counter Surveillance Monitor Kit lets you search out and remove electronic bugs! Highly sensitive wideband receiver detector. Higher pitch audio occurs when bug is near. HTs, cell phones, camcorders, lap top. Choose 2 1 MHz bands between 3 and 22 MHz. Popular 13,16,19, 25, 31, 41, 49 and 60 Meters international bands.

High degree of even-harmonic distortion. Includes tube, VAC power supply. Vectronics Kits. It can also be used at home with dipoles, vees, verticals, beams or quads fed by coax. Backlit dual movement meter simultaneously monitors power and SWR. Covers 18 to 30 MHz. Measures 7. Weighs just 3. You can tune your SWR down to the absolute minimum from 1. The bargraph is a 21 segment display that makes analyzing SSB power amazingly easy. This LED meter shows your peak reading and has fully adjustable level and delay controls.

RF directional coupler is fully shielded for even greater accuracy. Bargraph display and meter lamp require 12 VDC adapter, included. The antenna selector switch is a six position ceramic. Coax 1 is for tuned and tuner byass; Coax 2 is for tuned and tuner bypass, bypass and balanced antenna. The HFT measures 5. Weighs 10 lbs.

Tune any real antenna 1. Verticals, dipoles, yagis, quads, long-wires, G5RVs. Has balun for balanced line antennas. Bypass position keeps SWR meter in line. Use the built-in dummy load for testing and repairing your rig, setting power level, adjusting your mic gain and more. Chemically treated aluminum case has durable baked-on paint and scratch-proof color Lexan front panel. This portable compact antenna is perfect for indoor use by itself or with an external antenna.

Great for SWL! KP, chrome base or KPB, black base. Eliminates or reduces interference caused by nearby HF transmitters. Same as HPF-2, no six meter notch. Low loss in TV passband MHz. Handles Watts continuous, Watts for 10 seconds to MHz. Ceramic resistor. DC to MHz. Eliminates TVI by attenuating harmonics at the source. Plugs between transmitter and antenna or tuner. Features nine pole Chebyshev design. Insertion loss is only 0. Handles up to Watts key down.

SO connectors. True shielded directional coupler assures accuracy. Type N. BNC connector. It saves hundreds of watts wasted as heat. You get a full kilowatt PEP output from a whisper quiet desktop linear. A convenient front panel control lets you adjust output power level. The guts of the ALB is its heavy duty power supply. A 26 pound transformer using a high silicone steel core, computer grade capacitors, heavy duty bleeders and ten 3 amp, volt power rectifiers give you a stiff volts fully loaded.

A whisper quiet internal fan draws in cool air over power supply components and pressurizes the classic tube compartment to remove heat for longest life. Tuned input lets your rig deliver full output 50 Ohm broadband Pi-Network tuned input is used. Even fussy solid state transmitters will deliver full power! The high voltage secondary can be wired to reduce plate voltage for efficient operation below watts for use outside the USA.

Grid and plate current and forward output power are monitored for improper loading and abnormal conditions. Two-year waranty. Weighs 48 lb. Power required: VAC, 12A. Made in the U. This whisper quiet, desktop linear plugs into your VAC outlet - no special wiring needed. You get heavy duty power supply; fully neutralized tubes; pressurized ventilation; multi-voltage power transformer; front panel ALC control; vernier drives.

A Pi-Network tuned input using slug tuned coils provides a good 50 ohm load for your rig. A quiet internal fan draws in cool air over power supply components and pressurizes the tube compartment. Grid current, plate current and forward PEP output power are continuously monitored by dual, lighted cross-needle meters. Shipped wired for VAC. Weighs 40 lb.

Power required: VAC, 16 amps. Vernier reduction drives make tuning and loading adjustments smooth and easy. Tube protection: Grid current limiting circuit protects your tubes. Quiet pressurized ventilation keeps tubes safely cooled. Hefty power supply: 32 lb. Step-Start Inrush Protection: Stops damaging inrush current.

More hams use Ameritron AL amplifiers than any other amplifier in the world. The AL has earned a worldwide reputation for legendary quality, flawless performance, proven reliability and superb customer service. And you can conveniently plug it into your nearest VAC outlet -- no special wiring needed. Operate AL on all modes. The low cost A tubes resists failure because. Second, they use a directly heated thoriated tungsten filament cathode that prevents the electron emitting layer from instantly stripping off -- even if mistuning causes a sudden, severe current overload.

And the tubes are so inexpensive that you can replace one for mere pocket change. Extra heavy duty power supply gives you peak performance year after year The heart of the AL power supply is its heavy duty power transformer with a high silicon steel core weighing a hefty 17 pounds.

A full wave bridge using Wire wound, 7 Watt, 50 K Ohm equalizing resistors safely protect each filter capacitor -- not 2 Watt, K Ohm carbon composition resistors that can open and cause filter capacitors to explode or fail. Tuned input provides excellent load for any rig A Pi-Network tuned input provides a 50 Ohm load for your rig. Even fussy solid state rigs can deliver their full drive to the AL Low loss slug tuned coils -tunable from the rear panel -let you optimize performance.

High quality low drift silver mica capacitors maintain proper tuning. Output tank: Optimum Q on each band The low loss pi-network output tank has been carefully designed for optimum Q on each band and built with top quality RF components. A ball bearing vernier reduction drive makes plate tuning safe, precise and easy. A quiet blower pressurizes the cabinet with a large volume of air flow. Two illuminated meters Two illuminated meters give you a clear picture of your AL operating conditions so you can tell right away if something is wrong.

The Grid Current meter continuously checks for improper loading. The other meter switches be-tween high voltage and plate current to warn of abnormal conditions. Exclusive Adapt-A-VoltTM power transformer Too high of line voltage stresses components and causes them to wear out and fail. Your components last longer and gives you peak performance -- regardless of your line voltage.

Plus much, much more. A 12 VDC keying relay makes it compatible with all solid state and tube rigs. Back-pulse cancelling diode protects the rig keying circuit. Shielded RF compartment.

One year limited warranty. Draws 8 amps at VAC. Why settle for less power and pay more? Ameritron mounts the A tubes vertically -- not horizontally -to prevent hot tube elements from sagging and shorting out. Potentially damaging horizontal tube mounting requires special A tubes to retard sagging and shorting. Quiet, powerful computer grade blower draws in plenty of cool air. Feel the need for maximum legal HF output power? Cool, efficient operation is provided by a forced-air system with tube chimney, using a commercial grade die-cast ball bearing blower for maximum tube life.

The tube is further protected by time delay starting and automatic over-current shutoff to remove drive power if the amplifier is mis-tuned. You get full legal power output from a whisper quiet desktop linear. The guts of the AL is its heavy duty power supply, with a 32 lb. Peter Dahl Hypersil R trans-former using a high silicone steel core, computer grade capacitors 33 mfd total , heavy duty bleeders and twenty 3 amp, volt power rectifiers give you a stiff volts fully loaded.

Power goes into the antenna instead of into heat. Even fussy solid state transmitters deliver full power! The amplifier comes wired from the factory for VAC. The AL has two illuminated panel meters. Grid Current meter provides continuous reading of the critical grid current and indicates proper, safe amplifier operation. Power required: VAC, 15 amps. Frequency coverage: 1. UPS shippable, 3 boxes. It has a Watt control grid dissipation. A 3CXA7 has the lowest quantity history of field replacement of any modern transmitting tube that we use.

It has the ruggedness and power handling of ceramic tubes combined with the long-life of thoriated tungsten filaments. This classic linear gives you full legal output using a pair of Z graphite tubes. Examine the features and component ratings of the AL and compare it to any competing amplifier using two Zs. Plastic tuning stick for adjusting slug cores.

Fits Ameritron tube amplifier input coils. You get instant bandswitching, no tuning, no warm-up, no fuss! Must present FCC license at time of sale. Overpower protection enables if output forward power or reflected power exceeds a safe level.

Output power is automatically reduced to prevent amplifier damage by controlling ALC to exciter. The ALS is extremely quiet. You get a front-panel ALC control! A 12 VDC output jack lets you power low current accessories. Enjoy Watts of no tune Solid State power. Call your favorite dealer for your best price. It protected itself from our boneheaded, sleep-deprived band changing manuevers. It seems quite capable of looking out for itself.

Kudos to Ameritron. Extremely lightweight, just 10 lbs. Superb regulation, very low radiated noise. ALS amplifier with 10 lb. Gives high power QSK operation from your linear amplifier. Self-contained, connects externally to most HF amps. Internal QSK boards installed by Ameritron. Call for details. ATP Amplifier Tuning Pulser for safer tune-ups Pulse tuning safely tunes up your amplifier for full power output and best linearity. ATP keeps your average power to a low safe level to prevent overheating, tube damage, power supply stress and premature component failure.

ICP Inrush Current Protector Stops power-up inrush current and absorbs momentary high voltage spikes to protect amp, tubes and power components.

By starting the amplifier through a high power current limiting resistor and then shorting the resistor with a relay, the start-up sequence is easier on your tube and power components.

Works with nearly all linear amps. Limits current to 12 Amperes during heavy draw inrush period, 20A during continuous operating current. For Volt wired amps. Frequency select switches to one of six different ranges from 1.

When the filter is selected it reduces harmonics above cut-off frequency. SWR is less than 1. Has SO input and output connectors. Features remote detector board. Call for more details. Ameritron is not responsible for shipping loss or damage. Call to discuss which plan is best for you. The ARB advanced interface is compatible with all common radios and amplifiers even though radios and amplifiers do not have standardized voltages, accessory plugs, or wiring.

The ARB is designed to work with any amplifier and transceiver combination. Most cables are included with the ARB package. A few transceivers require an additional cable. See chart right. The input is designed to be compatible with any transmitter or transceiver, and the output is compatible with AC or DC positive or negative amplifier control lines having up to Volts peak open circuit voltage and mA of current.

Operates with rigs that pull amplifier control lines to ground, or output a wide range of positive or negative control voltages.

Get the ARB now! Covers 1. Mail with order to Ameritron. Virtually indestructible! Load Fault Protection eliminates amplifier damage due to operator error, antenna hitting tree branches, wheeler passing by. Auto resets. Typically watts in gives full output. Extremely quiet fan comes on as needed. Excellent harmonic suppression, push-pull output, DC current meter. See below left. Power, transmit and overload LEDs. Works with serial numbers above below requires the ARFK, above.

Now you can mount your ALSM out-of-the-way in your trunk, at the back of your motorhome or elsewhere and operate with just this tiny metal box at your station control.

Works with serial numbers above below requires the ARFK, see above. You can add the ALSRC for manual bandswitching and data monitoring, etc, see above right for description. No more picking up and hauling around heavy, bulky power supplies causes hernias. Not too big, not too small, just the right size!

Less than mV peak-to-peak ripple under 75 Amp full load. Load regulation is better than 1. Has reverse polarity protection, brown out input protection, over-current and over-temperature protection systems.

Whisper quiet internal fan. A thermal fan control varies fan speed as heat increases. Fan turns on slowly to minimize unwanted fan start-up noise. SPS has a unique Output Boost that steps up the output from Draws 11 Amps. Can also be used to charge your car battery. Properly installed on your vehicle this antenna covers Meters with a 6 foot whip.

Remove the whip for Meters. What makes our antennas stand above all the rest is that our CNC machined components are from aircraft aluminum or stainless steel and blueprinted, meaning you can take the antennas apart and mix them up, then reassemble and they work the same.

Our fiberglass coil form is approximately 2 inches in diameter. Other antenna builders know fiberglass is better but they choose not to use it because of the expense and difficulty in machining. We use 14 gauge wire for high power capability, wound at eight turns an inch for maximum efficiency.

We machine groove our coils so they will not loosen up or jam -- they won t wear out, for years of trouble free service! New Lexan cover is super durable and protects your Ameritron screwdriver for years of trouble-free service. The decoupler we use is CNC machined for tight tolerances with custom fingerstock designed to contact 3 turns of coil all the time with over 25 pounds of combined contact pressure. With this design you can run up to 1. We use a new heavy duty Pittman commercial 12 volt gear motor, which is very durable and quiet while receive tuning.

This motor is super heavy duty for years of trouble-free service. Antennas come with sensors already installed so if you add an auto controller, everything is ready.

Stainless steel flange mount base bracket , with multiple pre-punched holes. The SDA mounting rod is a 1-in. Ship Code B. Digital Screwdriver Controller 4-digit super bright LEDs tell you exactly where your antenna is positioned! Re-tune exactly -- fast, no guessing.

Use Magnetic sensor kit for High Sierra antennas. Magnetic sensor kit for Hi-Q Antennas. With a push of a button, you can quickly return to any saved position. A 4-digit turns counter with bright see-in-the-sun LEDs gives you precise antenna position. The antenna always moves to its desired position from the bottom, insuring that the motor is always loaded the same. Motor current can be monitored for signs of trouble and to determine stall current.

The MFJ Pulsar wideband and high gain performance antennas offer wideband and high gain performance on all bands for superior repeater performance. It will transmit a powerful signal and clearly receive weak and distant stations. Fiberglass Construction Heavy-duty fiberglass radomes and overlapping housings add strength and stability for long-lasting reliable use even in strong wind. Each Pulsar antenna uses stainless steel hardware and waterproof gaskets.

This prevents moisture and contamination from damaging your antenna. Pulsar antennas are preset at the factory and built for years of reliable use. Quick and easy mounting Minimal mounting makes Pulsar antennas perfect for base station and repeater use.

The stainless steel radials are easily screwed into the base by hand. Just plug your coaxial cable into its built-in waterproof connector. Mounting is so quick and easy that these antennas are ideal for portable, field and expedition use. Pulsars are supplied with all mounting accessories and mounting bracket.

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