SainSmart Forty-9er 3W HAM Radio QRP Kit CW Shortwave Radio Transmitter Receiver Telegraph

Features:

Power: 12V
Receive quiescent current: 23mA @ 12V
Emission current: 450mA @ 12V
Transmit power: 3W @ 12V
Frequency range: the vibration emission 7.023MHz, receive local oscillator 7.023-7.026MHz
Transceiver Distance: 100-300 km.
Mode: CW


Circuit Schematics:

Receiving section for a typical straight LM386 NE602 plus variable receiver.
Emitting portion utilizes the oscillation circuit NE602, and then to do the buffer amplifier 8050, 8050 also as the transmission key, the last stage is a class C amplifier D882, and then send the LPF after the antenna is connected. There sidetone launch.


Package Included:

1x New "Forty-9er" kits (not assembled)
1x Manual


FAQ:
Q: How far can be transmitted?
HF communication and propagation environment, antenna, equipment, operating level, and several other factors, alone device more difficult to guarantee a specific distance. Our suites are all classic models, a lot of people at home and abroad is already in use, the restaurant also has a client transmission performance is very good, the basic premise is that good performance antenna!

Q: telegraph can talk it?
CW transceiver can not talk, only supports the SSB or FM modulation, such as a machine before they can talk, can only use the key transceiver transmitter and headphones receive messages.

Q: key need to buy it?
For just beginners, amateur production expensive in DIY, do not recommend that you purchase an expensive key recommended homemade, find old mouse + MP3 headset line their own modified one.

Q: What kind of antenna?
Recommended "dipole" or "inverted V antenna", you can query "shortwave dipole antenna" for more information.