Description

FREE included traceable express shipping to most locations worldwide. Please contact us before you buy to check if you need to pay any extra for your destination (Africa, South America etc). Any import duties are your responsibility! This is international listing (outside of EU ONLY)! Shipping: DHL/TNT/Fedex 100% insured free express (depending on location). Typical delivery times are 4 - 8 days. Payment: We use eBay to process payment Feedback: Please leave feedback and you will see us add more cool items from our website over time. Warranty: 5 years, shipping costs paid by customer. Does not include wear&tear or lightning/water damage. Returns: Returns are accepted within 7 days after receiving an item, shipping costs paid by customer Servicing: We are the manufacturer and you can send units to us for servicing. Contact: We will be happy to answer any questions, we do our best to answer fast. Se habla Espanol! Wir sprechen ein bisschen Deutsch! AM transmitter with DSP processing, PWM modulator and DDS frequncy generator While for many mentioning AM transmitters brings back childhood memories, these are actually still used widely in some countries. Besides, AM can be lots of fun to play with. Long wire antennas, different signal propagation (even worldwide), the nostalgia that comes packed with it… well, it is something very different in this modern age. Our old AM MAX units sold out many years ago and for a long time we wanted to make a new AM transmitter, this time with different, more modern approach, with new better parts and better specs. And we finally did. It is equipped with DSP which makes it possible to control parameters of the audio chain, such as the compression, low pass audio filter cut frequency and preemphasis via convenient LCD with menu system. Other features, such as the fully solidstate PWM modulator which ensures crisp audio, >125% positive peak modulation, compact form factor, plenty of audio input options and LCD display unit make AM transmitters based on AMMAX8000+ really something special in this modern age. What is new in AM transmitters based on the new AMMAX8000 boards? – New larger high power FET (300W) – Robust PWM output stage based on larger FET, extra LC stage in PWM filter – A number of small fixes and improvements to improve reliability – Added anti-aliasing audio filter after DSP, less noise – Larger heatsink Technical specifications: – RF Output Power AM: ~100W peak, 10-25W carrier (24V-50V DC stabilized, use 50V for maximum power), varies with band and frequency – Output connector: BNC (1H version), N female (2H version) – Output Impedance: 50 Ohms – Frequency Range (MW version): 540-1710KHz – Frequency Range (shortwave version): 160m, 80m, 40m and other SW bands also available, please ask, output power is reduced at these ) – PLL Steps: 1KHz – Frequency stability: +/- 50Hz – RF output: Harmonics: -30dBc typ (varies with frequency, if necessary use external filter or high-q resonant antenna) – RF output (spurious): -70dBc – Power Supply: 48V/2.5A DC stabilized – Wideband design, no tuning required – Audio performance: compressor, low pass filter, limiter, treble, bass adjustment – RF output ruggedness: > 2:1 VSWR – Modulation: AM (CW input on-board. TTL 5V for disable) – Exciter board inside: AMMAX8000 board, PCB size: 100x125mm – Audio input board inside: 2x XLR, 2x RCA + USB audio inputs, accepts either mono or stereo signal (transmission is mono, channels are added up) – DRM support: On-board jumper inside can disable DSP processing which is great for DRM modulation – Modulation: AM, >125% positive mod – PWM circuit is opto isolated and can be used to drive high power external stage What is included with CyberMaxAM+ in 1H rack – CyberMaxAM+ transmitter in 1H rack – Audio input board + AMMAX8000+ are installed inside – 48V mains power supply with mains cable (we will try to guess the correct type for your region) - Regarding manual: If you open up google and enter "Manual for AMMAX8000 AM transmitter" the manual will probably be the first hit. If not the first it should be close to the top. Warning regarding using power meters: – Most HAM SWR/Power meters will not work well for MW band. Even types that perform reasonably well at 160m will fail miserably at 540KHz or even 1500KHz for example. Sensitivity of directional couplers is very much frequency dependent and usually this means the needle is not even moving with power output actually at 100W peak. CB power meter won’t even deflect at 100W peak power at MW! – With AM modulation peaks and using positive modulation in excess of 100% (this is done to make it sound louder and increase power efficiency) the carrier power with no audio applied will be less than ¼ of the peak power. So with no audio your power might be just 15W rising to 100W in peaks of modulation. – The only way to accurately measure peak power (or any power at MW) is to use dedicated power meter or oscilloscope (you can calculate power from voltage and known load which is 50 ohms). Dedicated power meter needs to have peak power measuring capability and must cover the MW band. CALL FOR FEEDBACK Please e-mail us back and let us know what kind of antenna you’re using and how many Kilometres you were able to squeeze out of your transmitter. We had one report with ~20km with previous weaker version (about 50W peak). Antenna is extremely important here and results can be really bad with untuned short antenna or spectacularly good with a proper antenna tower. WHAT ELSE WILL I NEED AND IT WASN'T INCLUDED? - Requires mains cable, which can be purchased in your country (each country has a different mains plug and we don't carry all). This is standard cable used in your PC for example and its price is typically around 1 US$ or less. You can get it in any electronics store, such as radio shack, circuit city, any computer store etc. Mains cable simply plugs into the transmitter, just like it does with your PC, there is no soldering involved. - Good taste for music and great skill to put together a program that will dazzle your listeners Who are you buying from? We are selling RF related equipment (mostly radio and TV transmitters) since 2003, google "pcs electronics cybermaxfm+" to find us. Address: PCS Elektronik d.o.o. Delavska cesta 41 4000 Kranj Slovenia VATID: si52735770