Icom IC-746 Faq page 5

3.5.8 Can't I just use the ACC port to key my amp?................................................ 48
3.5.9 How do I build my own SEND relay isolation circuit/relay?.......................... 48
3.5.10 Why do I get IC-746 birdies when I turn on my IC-2KL?.............................. 49
3.5.11 How do I hook up a Yaesu Quadra (VL-1000) amp to an IC-746?................ 49
3.6 TNC ......................................................................................................... 50
3.6.1 How do I hook up a TNC to the IC-746? .......................................................... 50
4 IF FILTERS.............................................................................................. 51
4.1 How many optional IF filters can I install into the IC-746? ........................... 51
4.2 What optional IF filters are available for the IC-746?.................................... 51
4.3 Which optional IF filters should I buy?............................................................ 52
4.4 What is an IF filter's "bandwidth"? ................................................................. 52
4.5 What is an IF filter's "shape factor"?............................................................... 52
4.6 Why do filter "bandwidth" or "shape factor" matter? .................................. 53
4.7 What is considered to be a narrow filter? ........................................................ 53
4.8 What are narrow IF filters used for?................................................................ 53
4.9 Can an IF filter be too narrow?......................................................................... 54
4.10 What's the difference between IF filters from Inrad vs. Icom? ..................... 54
4.11 Which IF should I put an optional filter into? ................................................. 55
4.12 What's different between IF filters for 9Mhz vs. 455Khz?............................. 55
4.13 What are the 9Mhz IF filters best for? ............................................................. 55
4.14 What are the 455Khz IF filters best for? .......................................................... 55
4.15 How do I get the best results from TPBT? ....................................................... 55
4.16 How do I configure the IC-746 to use an optional filter?................................ 56
4.17 How do I configure the IC-746 to use a non-Icom filter?................................ 56
4.18 How do I use a CW filter in SSB mode to receive PSK31? ............................. 56
4.19 Why is there only one optional 455Khz IF filter slot?..................................... 57
4.20 Any tips on installing 9Mhz Inrad filters?........................................................ 57
4.21 Where do I install a 2nd Inrad 9Mhz IF filter? ............................................... 57
4.22 Where can I find more information on filter characteristics?........................ 57
4.23 What are some popular filter combinations?................................................... 58
5 COMPUTER CONTROL.......................................................................... 59
5.1 How do I wire the IC-746 up for computer control?....................................... 59
5.2 What cables do I need?....................................................................................... 59
5.3 What are CT-17, OPC-478, OPC-662 all about? ............................................. 59
5.4 Do I need a special cable to connect a CT-17 to an IC-746? ........................... 61
5.5 What is the control protocol for the IC-746? ................................................... 61
5.6 What is CI-V?...................................................................................................... 61
5.7 What is the CI-V address of the IC-746?.......................................................... 62
5.8 What computer software is available?.............................................................. 62
5.9 Where can I get computer software and upgrades? ........................................ 62
5.10 Why doesn't computer software update freq when tuning the 746?.............. 65
5.11 How do I wire up the IC-746 for use with PSK31?.......................................... 65
5.12 Why isn't my computer control working?........................................................ 65
IC-746 FAQ
Page 5 of 113
2003-02-08