Icom IC-251A Amateur VHF Transceiver

25.2.17 Google de Ara Bing de Ara ziyaretci-sayac Görünüm.
Icom IC-251A 2 meter multi-mode transceiver employs advanced engineering principals. Supported modes include USB, LSB, FM and CW. Frequency coverage is from 143.8000 - 148.1999 MHz. Three memories are available plus band scanning. Power output is adjustable from 1 to 10 watts FM, 10 watts SSB and 10 watts CW. Other refinements include: speech processor, all mode squelch, noise blanker S/Center Tune Meter and RIT. A top panel door protects seldom used controls. The IC-251A has a built in AC power supply or can be run from 13.8 VDC at 3 Amps. 241x111x264mm 5 kg. 

Icom IC-251A

Type:Amateur VHF transceiver
Frequency range:143.800-148.200 MHz
Tuning steps:5 / 1 / 0.1 KHz
Mode:FM/SSB/CW
Channels/memory management:3 regular
Repeater shift/offset:No dedicated. Use VFO A/B split
Power supply:13.8 VDC +/-15% or mains
Current drain/power consumption:RX: Max 0.6 A
TX: Max 2.3 A
Antenna impedance/connector:50 ohms / SO-239
Dimensions (W*H*D):241*111*264 mm (9.5*4.4*10.4")
Weight:5 Kg (11 lbs)
Other features:Built-in SWR-meter




RECEIVER SECTION
Receiver system:Single conversion superheterodyne (SSB/CW)
IF: 10.7 MHz
Double conversion superheterodyne (FM)
1st IF: 10.7 MHz
2nd IF: 455 KHz
Sensitivity:SSB/CW: Better than 0.5 uV (10 dB S+N/N)
FM: Better than 0.6 uV for 20 dB noise quieting
Selectivity:SSB/CW: 2.4 KHz (-6 dB), 4.8 KHz (-60 dB)
FM: 15 KHz (-6 dB), 30 KHz (-60 dB)
Image rejection:More than 60 dB
AF output power/speaker:1.5 W at ?% distortion / 8 ohms
External speaker connector:




TRANSMITTER SECTION
RF output power: FM: 1-10 W
SSB: 10 W (PEP)
CW: 10 W
Modulation system:FM: Variable reactance
SSB: Balanced
Max FM deviation:±5 KHz
Spurious emissions:Less than -60 dB
Microphone impedance/connector:1.3 Kohm / 8-pin




MISCELLANEOUS
Manufactured:Japan, 1980-198x (Discontinued)
Additional info:
Related documents:User manual (7.4 MB)
RF final: 2SC2094
Modifications:
Options/Accessories:
IC-EX1
IC-EX2
IC-HM10
IC-HP1
IC-MB5
IC-SM5
IC-SP2
Extension terminal
Extension terminal with 25 KHz marker
Hand microphone with scanning
Headphones
Mobile mounting bracket
Desk microphone
External speaker
{[[''],['']]}
Uyarı: Bu yayındaki resim, makale ve video vs. Web'de bulunan çeşitli kaynaklardan alınmıştır. Telif hakkı tamamen kaynağa göre düzenledi. Bu konuda bir sorun varsa, buradan bizimle irtibata geçebilirsiniz.
«
»
Blogger
Disqus
Yorum Yapmak İsteyebilirsiniz

Hiç yorum yok

Yorum Kuralları
1. Yaptığınız yorumun, yazıyla alakalı olmasına özen gösteriniz.

2. Yukarıdaki Kurala uymamanız durumunda, Blog sahibi yorumunuzu yayınlama ya da yayınlamama hakkına sahiptir.