本項商品若為多件產品所組成的套裝組合商品, 則各項物件組裝之後即可出貨. 若其組件沒有庫存的情況下,
配合商品的物流寄送下, 接受訂單後, 一般預計 3 至 4 天內可出貨. 若組件或產品本身為原裝進口商品, 則適空運及廠商供貨情況,
可能需費時一至數個星期才能交貨. 若您訂購這項商品時, 我們將會進一步與您聯絡交期. 確定產品的確能如期交貨之前, 我們不會向您請款.
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| 特價: |
NT$3,780.00
(未含稅)
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| MFJ RF 感應式收發切換器. 當您的接收機與發射機是分離的兩台設備, 而想要共用一支天線時, 它可自動在兩台機器切換而共用天線. |
Do you enjoy using vintage tube type transmitters and receivers of your youth? It was a real chore to switch your antenna from transmit to receive and back -- it still is!
This neat little MFJ automatic T/R switch senses transmitted RF and switches your antenna from receive to transmit using a relay. It shorts your receiver antenna input to ground to protect your receiver. It also provides an auxiliary contact closure to ground during receive (opened in transmit) for an "On-the-Air" sign or other use.
Instead of using RF sense to switch the antenna, a control line input lets your key/keyer or PTT line switch the antenna. An adjustable time delay circuit gives you delayed switching. This prevents your antenna from switching between dots and dashes or between syllable and words.
Works on all modes -- CW, AM, SSB, FM, and digital modes. It handles 200W SSB PEP. Compact 4 W x 2 5/8 H x 1 1/2 D inches.
It has SO-239 coax connectors for antenna, transmitter, and receiver. It has control input, auxiliary contact closure to ground, time delay screwdriver adjustment, power jack. Requires 12 VDC or 110 VAC with MFJ-1312D.
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