|商品尺寸||20.32 x 2.54 x 0.64 cm; 49.9 克|
Comet Original BNC-W100RX 25MHz-1300MHz 手持式扫描仪天线延长长度:40英寸:折叠长度:8英寸 BNC 公头
- 频率范围*接收/扫描天线 25 MHz - 1300 MHz
- 展开长度:40 英寸:折叠长度:8 英寸
- Comet BNC-W100RX 扫描仪接收天线覆盖70至900MHz。 采用双折叠铰链,方便使用。 这款黑色伸缩式鞭子天线延伸至 40 英寸(1 米),但折叠至 8 英寸(20.3 厘米)。 它端接为BNC公插头。
这些 Comet 创新的手持式扫描仪天线小巧但功能强大! 其 W100RX 天线可以拉入信号,双折叠铰链允许这些天线与手持设备一起折叠-即使连接到皮带上! 伸缩元件的延伸长度为 40 英寸(约 101.6 厘米)。 折叠长度为 8 英寸。 此外,该元件被标记以获得*佳频率调谐! 它们有 BNC 或 SMA 连接器。 使用 Comet 手持式扫描仪天线进行便携。
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I bought this to replace the antenna that came with my Uniden BCD996XT after one of the internal links failed. It works well as an indoor wideband antenna. I'm listening to VHF, UHF and 800MHz successfully with this antenna fully extended. I have not investigated whether the antenna performs substantially better when extended to the specific lengths for specific frequencies.
Obviously, there are numerous factors involved with reception beyond the antenna itself - locality, frequencies, environment, antenna placement, etc. Also, a wideband antenna will never perform as well at any given frequency as one that is designed for that frequency. So don't expect miracles in reception from any wideband antenna replacement, but this one does perform well within what is possible for it's size and intentions.
At full extension with both joints straight it does wobble, especially at the first joint closest to the scanner., and very difficult to get it to stay straight. Probably best for a desktop home base as opposed to a portable. The double joint does allow for the scanner to be laid down with the antenna at aright angle, yet one joint would also make that possible.
I found a way to solve double joint thing. Bend the first joint (the lower one) at a right angle, for my scanner, bending to the right toward the top control know for stability, then bend the second joint at a right angle straight up. Once I stopped trying to get the antenna to stay straight with both joints up and tried this, it's solid. No more wobble, not more frustration.
Despite success with he double right-angle method in my first update, it's no use. This antenna is not practical for portable units. Even when it behaves and stands up straight, it makes the scanner top heavy.
I recommend for base units or portables that lay flat on a table etc.