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MFJ-1708 MFJ MFJ1708
[MFJ1708]

$69.95

RF SENSE TRANSMIT/RECEIVE SWITCH

We had 1 of this item in stock at the time of the last update.

View the manual for MFJ1708
View the manufactures page for MFJ1708
View the eham review page for MFJ1708

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"D.

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.

Optional Accessories

MFJ 2 MFJ1312D12Vdc 500mA WALL ADAPTER $ 15.95Buy MFJ1312D
RF SENSE TRANSMIT/RECEIVE SWITCH MFJ-1708 MISC RADIO ACCESSORIES
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