Radio station Карта ("Karta")

Electrical characteristics Model Карта („Karta“) Typical Frequency Range, kHz 3600 ... 3900 * Number of Frequency Channels 3 Mode of Operation J3E (SSB) Receiver Sensitivity, μV (at S / N ratio of 10 dB) 0,4 Receiver Output Power, mW (at 32  Ohm load ) 50 Rated Output Power of the Transmitter at a Load of 50  Ohm  (watts) 4 Rated Supply Voltage (Volt) 12.июн Consumption Current in Receive Mode (mA) thirty Consumption Current in Transmission Mode at Rated Output Power (mA) 700 Price in Ruble 24000 Antenna Price in Ruble 4500 Charger Price  in Ruble 1920 * The transceiver can be programmed for sub-bands of 200-300 kHz in the range of 1.7-7.3 MHz   Physical characteristics Model Карта („Karta“) Radio Station Dimensions (mm) 176x59x89 Radio Station Weight (kg) 01.мар Operating Temperature from -5 to +40 degrees Antenna Connector TNC Our new HF radio station Карта („Karta“) is a continuation of the series of professional shortwave radio stations of Soviet production, such as "Nedra" and "Karat". Made with modern circuitry and SMD radio components, using digital signal processing, they are able to take their rightful place in the backpack of an amateur or professional traveler. Fisheries inspectors, professional hunters, geologists or cartographers, geophysicists or forest workers - all of them will find appreciate using  "Uleima" and "Karta" in their field work away from the usual cellular networks. Due to their compactness, these radio stations will no longer be intimidating by their weight and dimensions. Having a small but capable radio station, headphones, an antenna and a battery (Uleima), the traveler can always be in touch within a radius of 150 km! The transceiver has only one transmit button (PTT), so even the casual user will not get confused. At the Uleima Transceiver, power is connected and disconnected by physically attaching or removing the plug of the battery pack, which prevents accidental battery discharge. Great care has been taken in the development of the transmitter output stage as to not damage it during operation in the event of an antenna breakage or mismatch. Some potential buyers might complain about the appearance of the Uleima-80 radio with its plastic case, external power ource, a usage of a standard smartphone headset made in China. "Uleima-80" was designed as an extremely small-sized and light-weight radio station for backpacking and for use from stationary objects like tents and forest huts. Its dimensions and weight are minimized as much as possible in order to facilitate transportation. However, if there is a need for mechanically reliable, shock-resistant radios with an external push-to-talk and an internal power supply, then this now available als the Карт („Karta“) radio. A sturdy aluminum case, TNC antenna connector, external PTT, built-in battery, power switch, handle and carrying case are the main differences from Uleima. All other parameters of this three-channel shortwave SSB radio station are the same. The radio station is very energy efficient. One battery charge can last for a week with modest usage. An LED indicator will notify the user of a decrease in supply voltage. And the HF voltage indicator on the antenna will indicate that the transmitter is working properly.

Презентация

The transceiver„Uleima-80“ is a continuation of the series of professional shortwave radio stations of Soviet production, such as "Nedra" and "Karat". Made with modern circuitry and SMD radio components, using digital signal processing, they are able to take their rightful place in the backpack of an amateur or professional traveler. Fisheries inspectors, professional hunters, geologists or cartographers, geophysicists or forest workers - all of them will find appreciate using  "Uleima" and "Karta" in their field work away from the usual cellular networks. Due to their compactness, these radio stations will no longer be intimidating by their weight and dimensions. Having a small but capable radio station, headphones, an antenna and a battery (Uleima), the traveler can always be in touch within a radius of 150 km!
The transceiver has only one transmit button (PTT), so even the casual user will not get confused. At the Uleima Transceiver, power is connected and disconnected by physically attaching or removing the plug of the battery pack, which prevents accidental battery discharge. Great care has been taken in the development of the transmitter output stage as to not damage it during operation in the event of an antenna breakage or mismatch.

The radio station is very energy efficient. One battery charge can last for a week with modest usage. An LED indicator will notify the user of a decrease in supply voltage. And the HF voltage indicator on the antenna will indicate that the transmitter is working properly.

Additional equipment such as a remote speaker, a full-size antenna and power cable will enhance the quality of communication and ease of use.

The ability to connect additional devices for sending text messages add to the advantages of this radio station.

The communication range is determined by ionospheric conditions and is usually 100-200 km during the day. Communication deteriorates significantly at night.

 Yaesu ft-817/818

1.8-430 MHz, USB / LSB / AM / CW / NFM, 5 watts,

350mA for receiving,

2A for transfer, weight 1kg

Dimensions: 135 x 38 x 165 mm

Pros: All types of HF + VHF, low consumption for reception
Cons: Poor protection against external influences, complex operation procedures, final amplifier can be damaged when using less than ideal antennas.

Q-mac hf-90

2-30 MHz, 50 watts up to 10 MHz, USB / LSB, 255 memory channels, consumption for receiving 350-400 mA, for transmitting up to 10A (at 50 watts),

weight 1 kg, dimensions 112 x 47 x 220 mm.

Pros: small, powerful, economical, protected from external influences, but not sealed, strong case

Cons: no smooth frequency tuning, only channels (255), no VFO tuning, high price in the secondary market, heavy weight of the complete carrying set (manpack) - 7.5 kg.

Barrett 940

1.6-30 MHz, up to 35 watts (25 watts nominal), 400 channels, USB / LSB / AM, 500mA receive consumption, 8A transmit, weight 9 kg

Pros: very strong, close to military design, good moisture protection, decent output power, excellent tuner for short standard antennas, there is a smooth VFO-like frequency adjustment, but only for reception, it has the ability to split into separate blocks (transceiver, ACS, battery) for carrying.

Cons: very heavy, requires some modifications for normal use, the standard battery provides only short operating time, the standard microphone is of poor quality.

Vertex vx-1210

1.6-30 MHz, 20 watts, 500 channels, USB / LSB / AM / CW, consumption while receiving 500 mA, for transmitting up to 5A, weight 3.2 kg with battery, dimensions 193 x 74 x 274 mm, built-in antenna tuner for short antennas.

Pros: VFO tuning with a step of 100Hz / 5kHz, light weight and dimensions, good moisture resistance of the front panel.

Cons: an error in the design of the antenna tuner, requires some modifications to the microphone.

QRPver DC-3001

1.8-30 MHz (but only sections of the amateur bands) USB / LSB, 5 watts, 120-250 mA consumption while receiving (depending on the volume level), 500-700mA for transmitting, weight 430g, dimensions 103x100x30mm

Pros: light weight, low consumption, small size (palm)

Cons: high price for such a product, moisture resistance is questionable, inconvenient location of the microphone jack

Xiegu x5105

1.8-30 MHz (TX only in amateur bands, but modification for full frequency spectrum is possible), USB / LSB / AM / CW / NFM, 5 watts, built-in tuner, built-in battery, built-in microphone and speaker, consumption for receiving 500 mA, for transmitting up to 2A, built-in Antenna analyzer, weight 900g, dimensions 160x100x46mm.

Pros: fully integrated design (tuner, battery, microphone / speaker in one case), light-weight, many features, double conversion (triple to NFM).

Cons: price, a lot of defects in Xiegu products, reliability questionable, bugs in the firmware, moisture protection questionable

JNB 200 Dual Band HF Transceiver

Comrad-160

Receiver range: 160 / 80m 1.6-4.0 MHz

Sensitivity: 1 μV 
Attenuator: yes, continuous variation 
Dynamic Range: 74dB

RIT: -+3 KHz 
ULF: 0.3W (????)

Modulation Type: LSB / USB 

Power: 5 W

Case dimensions: 11x4x12 cm 
Weight: 0.825 kg with microphone

KN-Q7A

DIY transceiver to has to be assembled by the owner.

Size: 153 mm x 97 mm x 40 mm 

Weight: 500 gr.

Power supply 12 ~ 13.8 V, 3 A

Current consumption for receiving 30 mA and for transmitting 2 A 

Output power: about 10 W PEP @ 13.8 V

Sensitivity: no worse than 0.5 μV

Modulation: LSB or USB

Audio Connector: 3.5 mm connector, mono output

Microphone: 8-pin, 

Antenna connector: SL-16 type or SO-239 

Controls: IF gain (used as volume control) and frequency setting 

An external Icom-type microphone has to be used.

Elecraft K2

Frequency Range: 1.6 – 30 MHz *

* Ham bands only in Transmit and Receive, no general coverage receiver

Receiver sensitivity (MDS): -135 dBm

Dynamic Range (Blocking) 133 dB

Current drain on receive: as low as 150 mA (9 – 15 Volt), typically 200 mA with DSP on

Current drain on transmit: 2A @10 watts

Power Output: 10 watts (15 watts possible but not recommended)

Operating Modes: LSB, USB, CW, RTTY, data modes possible

Size: 8.5 x 20 x 25 cm

Weight: around 2.5 kg with internal lead acid battery

Pros: Excellent receiver (single conversion superheterodyne), sharp filters, very low power consumption, very robust finals can cope with high SWR, excellent wider range antenna tuner build in, internal 2.2 Ah lead-acid battery give long operating times, can be easily repaired by owner, 100 watts finals for using at home available, still in production after 20 years, excellent support by manufacturer.

Cons: very expensive, especially with lots of options that have to be bought separately, sold as a kit, must be build by owner in a complicated process, no protection against water or dust ingress, heavy,  watertight Pelican transport case adds to weight, old technology (developed around 1999), only serial port for CAT, must be repaired by owner (with support by Elecraft).