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FT 7800 RX sensitivity	Reply
by N1EY on August 29, 2008	Mail this to a friend!
This has been vexing me for awhile. I am on break right now and I need to know!! Is there anyone way to improve the RX sensitivity on the FT7800? I am wondering if the software has some programming to prevent good 1.25 or AM reception. I only can hear an AM signal when it is really OVERDRIVEN. I think that the sensitivity is VERY VERY LOW in the non-ham bands that something is amiss. n1ey

RE: FT 7800 RX sensitivity	Reply
by K0BG on August 29, 2008	Mail this to a friend!
I don't know what AM signals you're trying to listen to (aircraft maybe?), but VHF radios which have wide-band receivers tend to have lousy receive outside their nominal bandpass (2 meters, 70 cm). It is just the nature of the beast. You could add a preamp, but I'd bet it won't help very much. If you have to have a really good, all mode VHF radio, the the Icom IC-910 is the way to go. No one has a better one, and probably won't considering the trend in amateur transceivers. Alan, KØBG www.k0bg.com

RE: FT 7800 RX sensitivity	Reply
by K5LXP on August 29, 2008	Mail this to a friend!
Gonna guess the antenna has a lot to do with it too. Something like a 5/8 2M antenna would be nothing more than a shorted piece of coax at 1MHz. Mark K5LXP Albuquerque, NM

RE: FT 7800 RX sensitivity	Reply
by N1EY on August 29, 2008	Mail this to a friend!
You can plug a discone into this radio and only get S1 signals from HELOS flying above on the VHF airband. What gives? I think that something is off.

RE: FT 7800 RX sensitivity	Reply
by N4BFD on September 1, 2008	Mail this to a friend!
I have the same radio and have no trouble listening to the AM VHF airband under 2 meters. Signals are strong and I pick up aircraft for a few hundred miles.

RE: FT 7800 RX sensitivity	Reply
by KL2MV on September 2, 2008	Mail this to a friend!
i have the ft8800 and have noticed that receiving am aircraft i have to turn the volume down to hear them clearly, anything more that 40% or so and it is just noise. i noticed this a couple weeks ago when there was an overdue craft in my area. i was driving around the island trying to listen to the coastguard on one side and scan the aircraft frequencies on the other. i had actually gave up on trying to listen to the aircraft frequencies all together till i stumbled on this one. unfortunatly they never did find the craft, its been 4 weeks now.

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