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4 

Table of Contents 

1-800-773- 7931       W W W .PALST AR.CO M  

 

Important safeguards 

   

 

 

2 

 

General Description 

   

 

 

5 

 
Front Panel Functions 

   

 

 

6 

 

Rear Panel Functions 

   

 

 

11 

 

Other Features 

 

 

 

 

13 

 

Radio Theory Primer—Frequency & Wavelength 

14 

 

The Electromagnetic Spectrum 

 

 

15 

 

Radio Propagation 

 

 

 

 

15 

 
Shortwave Broadcast Bands   

 

 

17

 

 

Amateur Radio Bands 

 

 

 

 

18

 

 
World Time 

 

 

 

 

19 

 
Warranty and Service 

 

 

 

 

21 

 

Specifications 

 

 

 

 

22

 

 
 
 

 

Specifications    

25 

1-800-773- 7931       W W W .PALST AR.CO M  

Dimensions 

 

 

232mm W x 100mm H x 225mm D 

 

 

 

 

9.13” W x 3.94” H x 8.88” D 

 

 

 

 

Weight: 1.8 kg (3.9 lbs) 

 

Sensitivity

 

 

 

100 kHz to 2 MHz 

 

 

 

 

AM 

 

2 µV 

 

 

 

 

SSB 

 

.5 µV 

 

 

 

 

2 MHz to 30 MHz 

 

 

 

 

AM 

 

1 µV 

 

 

 

 

SSB 

 

.5 µV max 

 

 

 

 

 

 

10db(S+N/N) 

 

Selectivity

 

 

 

45 MHz   

8 kHz BW 

 

 

 

 

455 Khz (AM) 

6 kHz 

 

 

 

 

SSB 

 

2.4 kHz 

 

Dynamic Range

 

 

 

>90 dB at 50 kHz from desired 

 

Spurious Responses

 

 

At 45 MHz 

> 65 dB rejection 

 

 

 

 

At 455 MHz 

> 90 dB rejection 

 

Intermodulation

 

 

 

Third order Int15dbm 

 

Frequency Stability 

 

+/- 20 Hz per hour –15°C to +50°C 

 

AGC Range

 

 

 

1µV to 500 mV 

< 2 dB change 

 

 

 

 

Attack time 

< 3 ms 

 

 

 

 

Delay - slow 

< 4 secs 

 

 

 

 

Delay - fast 

<.5 secs 

 

Audio

 

 

 

 

2 watts into 8 

Ω

  

2% THD 

 

 

 

 

Distortion: 

 

 

 

 

1 kHz signal AM at 

 

 

 

 

60% mod. Depth 

< 1% 

 

 

 

 

SSB 

 

< .5% 

 

S/N Ratio

  

 

 

(AM Mode) 

 

 

 

 

6 kHz filter ref. 60% @ 1 kHz 

 

 

 

 

5 µV 

 

20 dB 

 

 

 

 

500 µV 

 

> 50 dB 

 

 

 

 

(SSB Mode) 

 

 

 

 

5 µV 

 

30 dB 

 

 

 

 

500 µV 

 

> 50 dB 

 

Power Supply

 

 

 

DC required 

12 vdc@1A regulated

 

 

 

 

Quiescent current  300 mA (with lamps)

 

 

 

 

Typical current use  350-800 mA 

 

 

Содержание R30A

Страница 1: ...ney Rd Piqua OH 45356 USA Customer Service and Sales Telephone 1 800 773 7931 Fax 1 937 773 8003 Email info palstar com Version 1 1 August 15 2008 Copyright 2008 Palstar Inc Printed in the U S A R30A SHORTWAVE RECEIVER Owner s Manual ...

Страница 2: ...R SERVICING TO QUALIFIED PERSONNEL ONLY CAUTION TO PREVENT ELECTRIC SHOCK DO NOT USE THE THREE WIRE CORD WITH AN EXTENSION CORD RECEPTIACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE An appliance and cart combination should be moved with care Quick stops exces sive force and uneven surfaces may cause the appliance and cart combination to overturn The lightnin...

Страница 3: ...ontrols that are covered by the operating instructions An improper adjust ment may result in damage and will often require extensive work by a qualified technician to restore the product to its normal operation e If the product has been dropped or the cabinet has been damaged f When the product exhibits a distinct change in performance this indicates a need for service 19 Replacement Parts when re...

Страница 4: ...z to 2 MHz AM 2 µV SSB 5 µV 2 MHz to 30 MHz AM 1 µV SSB 5 µV max 10db S N N Selectivity 45 MHz 8 kHz BW 455 Khz AM 6 kHz SSB 2 4 kHz Dynamic Range 90 dB at 50 kHz from desired Spurious Responses At 45 MHz 65 dB rejection At 455 MHz 90 dB rejection Intermodulation Third order Intercept 15dbm Frequency Stability 20 Hz per hour 15 C to 50 C AGC Range 1µV to 500 mV 2 dB change Attack time 3 ms Delay s...

Страница 5: ...ession terminals Audio Outputs External speaker 1 4 jack selected balanced output Headphone 1 4 jack Internal Speaker is disconnected when headphones or external speaker are plugged in Recorder output line audio Mute audio for use with a transmitter Power Supply External 12 DC supply internal 10 cell battery pack for portable use lamps in off mode 2 1mm ID 5 5mm OD center positive DC Input Jack Ge...

Страница 6: ...s the num ber of the active memory channel then pressing the Tuning Knob 1 10 2 3 4 5 6 7 9 8 23 Antennas continued 1 800 773 7931 WWW PALSTAR COM building it may be too shielded for an indoor antenna to work well Performance of the antenna will be improved by providing an earth connection to a ground stake For best results get a good quality ground stake approved for grounding an electrical servi...

Страница 7: ...ted hookup wire If you don t have a metal roof effective wire antennas can also be strung in attics You may desire the improved performance that an outdoor an tenna provides or if you live in a steel reinforced or metal sided Front Panel Functions 7 1 800 773 7931 WWW PALSTAR COM toward the front panel until it clicks will cause the stored frequen cies to be displayed instead of the channel number...

Страница 8: ...west available empty memory channel number and number will be flashing 8 Front Panel Functions 21 Single Sideband SSB Reception 1 800 773 7931 WWW PALSTAR COM ates a signal that is mixed with the received signal with just enough frequency offset to result in the audio tone In the Palstar R30A the BFO is engaged by choosing the Upper Sideband USB or Lower Sideband LSB modes As you tune across a CW ...

Страница 9: ...nd of intermittent raspy noise as the dots and dashes go by To convert the CW signal into a pleasant audio tone that is easy to read there is a circuit in the receiver called a Beat Frequency Oscillator BFO The BFO cre 1 800 773 7931 WWW PALSTAR COM d To store the previously tuned station in the default channel number press the MEM button once e To store the previously tuned station in a memory ch...

Страница 10: ...s 10100 10150 30 Meters CW Data only 14000 14350 20 Meters 18068 18168 17 Meters 21000 21450 15 Meters 24890 24990 12 Meters Shared with Fixed Service 28000 29700 10 Meters Other Services The Shortwave spectrum is also home to many other radio ser vices including ship to shore transoceanic airlines government military and others Often called Utility Stations or Utes for short their transmission mo...

Страница 11: ...mmunications link into or out of a disaster area for many days after the occurrence In fact the ability of Hams to provide emergency communications is one of the primary reasons Ham radio exists The primary modes heard on the Ham bands are CW Morse Code usually down at the lower end of each band and voice communications in the form of Single Sideband SSB there will be more about SSB later on There...

Страница 12: ...ng high currents such as the battery of a car or boat you must protect the radio by placing an in line fuse holder in the power cable and use a fast blow fuse rated no more than 1 Amp What Can I Hear 17 1 800 773 7931 WWW PALSTAR COM What I can hear on my Palstar R30A Receiver Long Wave LW 100 kHz to 300 kHz The most common inhabi tants of this range of frequencies are navigation aids known as non...

Страница 13: ... radio propagation can be summarized in a few statements 1 The higher frequencies are better during daytime and in the summer months 2 The lower frequencies are better during night time and in the winter months 3 Periods of high sunspot activity favor the higher frequencies periods of low sunspot activity favor the lower frequencies 4 Solar flares and other disturbances on the Sun can cause geo ma...

Страница 14: ...xplanation of wavelength you can now understand what is meant when someone talks about say the 80 meter band or the 49 meter band This is just another way to refer to a group of frequencies that have been set aside for a specific purpose For Electromagnetic Spectrum Propagation 15 1 800 773 7931 WWW PALSTAR COM example the 80 meter band is an amateur radio ham band that runs from 3 5 MHz to 4 0 MH...

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