CAT-004 is the active antenna for digital TV system.
CAT-017-F is the active antenna for digital TV system.
For your information, we are Yi Chang Hsiang Ind Co., Ltd. established since 1994, which is famous in Taiwan communications industry.
We are specoalized in cell phone antennas (GDMA, GSM, TDMA and GPS), car GSM antenna, digital TV antennas (ISDB-T, DVB-T, ATSC, DMB& CMMB), DAB and FM antennas. Besides we also have mini boosters and the amplifier with cables. We also offer OEM/ODM project to our customers.
First, let me introduce you about our passive and active antennas ---
a. for passive antenna --- there is no amplifier inside; just antenna itself to catch the signal from the air;
b. for active antenna --- there is amplifier inside and needs the power source to let the amplifier work;
(1) Combine the power supply and signal input with the same cable.
(2) Separate the power supply and signal into two different cables.
Second, let me introduce you about the common usage for our DVB-T antenna ---
a. for indoor or home TV, portable TV, USB dongle, Notebook or computer: just like the magnetic base with cable and the antenna poles; and the PMP antennas without cable.
b. for top of the car: just like YCH-109 and CA-005 and CAT-017.
c. for bumper of the car: just like CAT-002, CAT-009, CAT-026-A and CAT-031.
d. for film antenna: just like YCH-110, CA-003, CA-004, CAT-001, CAT-003, CAT-008 and the stylish antennas.
Third, the other conditions---
a. Price: depends on the cable length, antenna appearance and the specific function, frequency, connector you demand.
b. Delivery time: within 4 weeks after the mass production; please give me your International Express Account Number for the sample delivery;
c. Payment term: 30% down payment before the mass production; 70% payment before the shipment.
Here is our website http://www.ych-antenna.com/indexe.asp, you may check more models and simple specifications on it. web66