1979 yildan beri &quot;Cheremshina-306&quot; va &quot;Cheremshina-307&quot; abonent karnaylari Lvov telegraf uskunalari zavodi tomonidan ishlab chiqarila boshlandi. Karnay 30 V kuchlanishli radio tarmoqlari orqali uzatiladigan dasturlarni tinglash uchun mo&#39;ljallangan. AG stol ustiga qo&#39;yilishi yoki devorga osib qo&#39;yilishi mumkin. Cheremshina-306 ning oldingi panjarasi zarbga chidamli polistiroldan, Cheremshina-307 paneli esa teshikli alyuminiydan yasalgan. Ikkala karnayning karnay tizimi 0,5GD-42 dinamik boshidan iborat. Chastotalar diapazoni - 160 ... 6300 Hz; tovush bosimi bo&#39;yicha notekis chastotali javob - 15 dB; o&#39;rtacha ovoz bosimi - 0,23 Pa; tovushni boshqarish diapazoni - 32 dB; karnayning o&#39;lchamlari &quot;Cheremshina-306&quot; - 190x194x78 mm, AG &quot;Cheremshina-307&quot; - 166x238x86 mm; AG &quot;Cheremshina-306&quot; og&#39;irligi - 1,26 kg, &quot;Cheremshina-307&quot; - 1,1 kg; har qanday AG narxi 5 rublni tashkil qiladi.

Cheremshina-307

                             &#39;&#39;           -306 &#39;&#39;   &#39;&#39;            -307 &#39;&#39; Abonent karnaylari &#39;&#39; Cheremshina-306 &#39;&#39; va &#39;&#39; Cheremshina-307 &#39;&#39;.