AM TRANSMITTER for 80-40Meter Band 20 watt carrier, 80w PEP AM DDS TRANSMITTER GENERATOR NEW 3.5MHz-7.5MHz 20w

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Seller: rfandaudioelectronics ✉️ (274) 0%, Location: Athens, GR, Ships to: WORLDWIDE, Item: 252786531728 AM TRANSMITTER for 80-40Meter Band 20 watt carrier, 80w PEP.

0- 20w  carrier     80w P.E.P

TECHNICAL  SPECIFICATION

0- 20w carrier 80w P.E.P   DDS SYNTHESIZER GENERATOR

Frequency range varies and is programmed according to regional  regulations and order specifications.

OPERATING FREQUENCY 3500-7500 KHZ
FREQUENCY STEP 1Hz, 10Hz, 100Hz, 1 KHz,  5KHz, 9KHz, 10KHz ,50KHz   DDS 
POWER ADJUSTMENT CARRIER 0~20w , (  0~80W P.E.P)  
FREQUENCY RESPONSE 50HZ  – 10KHZ
AUDIO INPUT RCA FEMALE : 700mv /10 k  ( OPTION XLR BALANCED Ask for price ) 
RF OUTPUT COAXIAL , FEMALE CONNECTOR   SO239 (VHF ) ,  50 OHM
HUM AND NOISE  >-65DB OR  BETTER
SWR PROTECTION YES
TX INDICATOR YES
 HI SWR   INDICATOR  YES
24  HOUR  OPERATION YES
THERMAL  PROTECTION  YES
WATT METER AND SWR METER INCLUDED YES
MODULATION METER YES
INTERNAL  POWER SUPPLY    115 / 230-240 V A C YES
P.T.T  SWITCH YES
REMOTE LINEAR RELE YES
BALANCE  AUDIO  IN  ,  XLR ( is OPTION Ask for price )  XLR
WEIGHT WITH PACKAGING ABOUT 7.5Kg
UNIT SIZE 2U RACK

 

Between transmitter and antenna, you must connect an antenna tuner (matcher or coupler) to match the antenna impedance to the transmitter output impedance, which is 50 ohm. In very rare cases when you have a full size pre-tuned 50 ohm antenna you do not need an antenna tuner, but this is an ideal situation only possible to radio stations with big space available for their antenna installation.

In any case that the antenna impedance is not same with the transmitter output impedance, return power in the form of standing waves is produced and this is potentially damaging for the transmitter. This is also a reason for a low efficiency and poor performance of the antenna and transmission, that means reduced coverage strength and only short transmitting range.

In many cases the transmitter will also automatically reduce the output power to protect the final amplifier from blowing up, so the antenna must be pre-tuned with the antenna tuner before the transmitter will be connected.

There are many antenna analyzers in the market that can be used for the purpose of tunning the antenna tuner before you connect the transmitter to the antenna tuner and the antenna.

 

You must not forget that good grounding of the antenna system is absolutely necessary and will protect the transmitter from RFI and serious damage that may occur after electrical storms and lightning. If you are not an engineer, or you have no further experience with this product please feel free to ask for any help required.

 

Please remember that this type of transmitting electronic equipment are not simple plug & play devices like a cd player for example. Friendly,

A .T.   Engineer

If you  have some questions feel free  to contact with us before bid or buying.

Also we need to know ( about ) the operating frequency in order to test in our labs for proper operation before shipment. 

We do not share  information with noone, used only to help you to get a TX, with proper operation. Thank you for your cooperation.

B idding  / buying is a contract  agreement between seller & buyer. 

Please honor your  agreement part as we will  honor our part in any case!

SHIPPING: All goods sent with track number.

For most countries you can show from the web of the transportation company (courier, post office, etc) and is free service.

For very less cases must contact with phone or email to get this info.

We do not ship anything unless we have your mobile phone, which will need a carrier, if you're not there

Also if the packet is damaged, do not accept it , do not get it from the carrier, and contact with us immediately.                 Thank You.

 

             

  • Condition: New
  • Supported Modes: AM
  • Frequency Band(s): HF

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