View Single Post
  #7   Report Post  
Old February 27th 15, 07:20 AM posted to rec.radio.amateur.equipment
wa7kgx wa7kgx is offline
external usenet poster
 
First recorded activity by RadioBanter: Jan 2015
Posts: 6
Default Yaesu FT-991 AM transmission defective

On Fri, 13 Feb 2015 02:30:57 -0600, wa7kgx wrote:

On Fri, 13 Feb 2015 01:30:16 -0500, Fred McKenzie wrote:

In article ,
wa7kgx wrote:

The air checks are available at http:www.omen.com/waykgx/ham.html

For some reason I couldn't post the sound files to the newsgroup with
PAN.


WA7KGX-

Some news servers do not accept files.

I saw your comments on the eHam net forum.

I have a list of several problems with my FT-991, including the
defective AM. There are some things I like about the radio, so I
prefer to get it repaired rather than getting a refund.

The reason AM power is set to 25 Watts, is that the radio is only
capable of 100 Watts. One hundred Watts is the peak power of a 100
percent modulated 25 Watt AM signal. The FT-991 Po meter should kick
from 25 Watts to nearly 100 watts on voice peaks. Mine kicks downward
instead.

If you can not get a refund, I suggest you also take the "repair"
approach. There is no reason the radio should not produce an
acceptable AM signal. It almost certainly is misaligned, and can be
corrected. If Yaesu can not correct the problem by alignment, then
they should replace the defective module.

With regard to your other comment about listening to a repeater's input
frequency, you can easily do that with the REV function. You will
notice that it changes the memory contents, so you must press the REV a
second time to return to normal frequencies.

That is one of my minor gripes about the radio, that some functions
directly affect memory, rather than a "working copy" of the memory.

73,
Fred K4DII


First time I tried using REV: set fm repeater 145.29 rpt - offset.
REV made a sound but did nothing.

Did a full processor reset, same result.
Then on a hunch I set repeater offset to + and voila! REV works.

This is one buggy radio.

Yaesu have posted firmware updates to the FT-991 as well as the CAT codes.