DX 88HL

Specifications
GENERAL
Channels	40 CH
Frequency Range	28.315 to 28.755 MHz
Frequency Control	Phase Lock Loop (PLL) synthesizer.
Frequency Tolerance	0.005%
Frequency Stability	0.001%
Operating Temperature Range	-30°C to +50°C
Microphone	Plug-in dynamic; with push-to-talk switch and coiled cord.

Input Power	13.8V DC nominal, 15.9V max, 11.7V min. (positive or negative ground). Transmit: AM full mod., 4A. SSB 25 watts PEP output, 6A Receiver: Squelched, 0.6A Maximum audio output, 1.2A
Size	2-3/8” (H) x 7-7/8” (W) x 9-1/4” (D).
Weight	5 lbs.
Shipping Weight	9 lbs.
Antenna Connector	UHF, SO239
Meter	Illuminated; indicates relative output power, received signal strength and transmit power.

TRANSMITTER

Power output	AM/FM/ 10 watts. SSB, 25 watts PEP.

Modulation	High-and low-level Class B, Amplitude Modulation: AM. Variable Frequency Modulation: FM.
Intermodulation Distortion	SSB: 3rd order, more than –25dB. 5th order, more than –35dB.





SSB Carrier Suppression	55dB
Unwanted Sideband	50dB
Frequency Response	AM and FM: 450 to 2500 Hz.
Output Impedance	50 ohms unbalanced.
Output Indicators	Meter shows relative RF output power and SWR. Transmit LED glows red when transmitter is in operation.


RECEIVER
Sensitivity	SSB: 0.25 uV for 10 dB (S=N)/N at greater than ½-watt of audio output. AM: 1.0 uV for 10 dB (S+N)/N at greater than ½-watt of audio output. FM: 1.0 uV for 10 dB (S+N)/N at greater than ½-watt of audio output.
Selectivity	AM/FM: 6 dB @ 3KHz, 50 dB @ 9KHz. SSB: 6 dB @ 2.1KHz, 60 dB @ 3.3KHz.

Image Rejection	More than 65 dB.
IF Frequency	AM/FM: 10.695 MHz 1st IF, 455 KHz 2nd IF SSB: 10.695 MHz


Adjacent-Channel Rejection	60 dB AM/FM & 70 dB SSB


RF Gain Control	45 dB adjustable for optimum signal reception.

Automatic Gain Control (AGC)	Less than 10 dB change in audio output for inputs from 10 to 100,000 microvolts.



Squelch	Adjustable; threshold less than 0.5 uV.
ANL	Switchable.
Noise Blanker	RF type, effective on AM/FM and SSB
Clarifier Range Fine	(TX/RX) ±1 KHz.
Audio Output Power	4 watts into 8 ohms.
Frequency Response	300 to 2800 Hz.
Built-in Speaker	8 ohms, round.
External Speaker (Not Supplied)	8 ohms; disables internal speaker when connected.