something along the lines of this ??
I have a separate Receive Antenna that feeds a MFJ 1026 noise cancelling comparator in-line with my 6300.. It's keyed by the PTT to disengage for protection; there is an adjustable delay as well. In the mode of "suspenders & belts" I have also installed a Array Solutions surge protector:
https://www.arraysolutions.com/surge-and-rf-protection/as-rxfep . As someone who has blown out the front end of my K3 years ago I'm very sensitive to what you are asking. As an aside the MFJ 1026 is a big difference maker here in the DX wasteland of Texas. It allowed me the "hear" and work two good contacts, Algeria and South Pole! My receive antenna is in close proximity to my resonant 40 and 80 meter horse fence dipoles so I opted for layered protection.
No issues whatsoever on RX port on a plxel loop about 100' away about 30' below thebeqm or dipole on ANT2 65' below the beam and about 50' away
The 6700 is also designed for SO2R without any external devices
IiRC the antenna ports have protection at about 19(?) dBm.
Here’s a good previous discussion on front end protection and devices, including comments from Flex:
Also, some interesting charts showing modeled coupling in watts between different types of antennas at various spacings, and 1KW transmitter power, courtesy of W8JI:
- 3076 Conversations
- 632 Followers
- 3607 Conversations
- 932 Followers
- 873 Conversations
- 150 Followers
- 2970 Conversations
- 850 Followers
- 1039 Conversations
- 164 Followers
- 954 Conversations
- 132 Followers
- 1114 Conversations
- 160 Followers
- 1115 Conversations
- 146 Followers