If a transceiver is limited to 100 watts PEP output, it cannot produce
normal AM at 100 percent modulation if the unmodulated carrier power is more
than 25 watts. For linearly modulated AM, peak envelope power is 4 times
the carrier power.
Lloyd Rasmussen, Kensington, MD
http://lras.home.sprynet.com
-----Original Message-----
From: John Miller
Sent: Wednesday, March 12, 2014 7:02 PM
To: [log in to unmask]
Subject: Re: Still troubleshooting my ocasional AL811 relay tripping issue
The TS-2000 has a separate carrier and power control, I backed the carrier
setting way down, AM sounds good now, better than I'd think and SSB was not
effected at all. I can only get 25 watts out on AM but I know my old TS-450
you could get 100 watts out on AM, it didn't sound good but it would do it
and got hot fast.
----- Original Message -----
From: "Pat Byrne" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, March 12, 2014 5:56 PM
Subject: Re: Still troubleshooting my ocasional AL811 relay tripping issue
> John,
> I recall that, at least on the TS850 there is a power control. When
> I used to work ten meter A M, I had to set that way down, probably to
> 20 watts or so. That works the power amplifier about the same as 100
> watts SSB. Any more than that and the transceiver doesn't have
> enough overhead to do anything except sound terrible.
> But I am pretty sure that there are both power and carrier controls,
> again at least on the TS850. Sure wish I could swing that TS590 deal
> Tom shared earlier.
> Pat, K9JAUAt 04:28 PM 3/12/2014, you wrote:
>>I just checked the carrier setting on my TS-2000, it was set to the
>>default
>>50 yet it didn't start losing power at all until I got to about 15 so I
>>cranked it way down. With the monitor on, it sounds a lot better on AM now
>>where as it never did sound right.
>>----- Original Message -----
>>From: "Steve" <[log in to unmask]>
>>To: <[log in to unmask]>
>>Sent: Wednesday, March 12, 2014 4:43 PM
>>Subject: Re: Still troubleshooting my ocasional AL811 relay tripping issue
>>
>>
>> >A Over means you are driving well past the ALC limit.
>> >
>> > ----- Original Message -----
>> > From: "Tom Behler" <[log in to unmask]>
>> > To: <[log in to unmask]>
>> > Sent: Wednesday, March 12, 2014 1:52 PM
>> > Subject: Re: Still troubleshooting my ocasional AL811 relay tripping
>> > issue
>> >
>> >
>> >> Mark:
>> >>
>> >> Were you using an AL811H?
>> >>
>> >> If so, that could lend some credibility to your theory.
>> >>
>> >>
>> >> I am using a Heil gold line mic on a boom here, and I do notice that =
>> >> sometimes, I tend to get a bit too close to the mic--that is, closer =
>> >> than I should be.
>> >>
>> >> It will be fairly easy to test out your theory, and I'll see what =
>> >> happens when I do so, perhaps sometime during the next few evenings.
>> >>
>> >> Tom Behler: KB8TYJ
>> >>
>> >>
>> >> -----Original Message-----
>> >> From: For blind ham radio operators =
>> >> [mailto:[log in to unmask]] On Behalf Of Mark Torgerson
>> >> Sent: Wednesday, March 12, 2014 11:13 AM
>> >> To: [log in to unmask]
>> >> Subject: Re: Still troubleshooting my ocasional AL811 relay tripping =
>> >> issue
>> >>
>> >> Hi Tom:
>> >>
>> >> Well, I am not sure if this is the issue that you are having, but in
>> >> my =
>> >> case, when I had my AMP on HF, certain words and letters sent the
>> >> power =
>> >> out put all the way to the red line. Smile. Lets just say that I am
>> >> glad
>> >> =
>> >> that legally the statute of limitations is well past for me getting =
>> >> fined for those infractions. However, when I said the letter W. it
>> >> sent =
>> >> the gages off the scales. While other words only kicked the gage up to
>> >> =
>> >> around 600 watts or so. As I said above, I am not sure if this is the
>> >> =
>> >> trouble you are having. It would explain why the trouble is =
>> >> intermittent.
>> >> God bless,
>> >> Mark
>> >>
>> >>
>> >>
>> >> --
>> >> Currently in Rockford, Greater Rockford, Illinois Overcast, =
>> >> 37.9=C3=82=C2=B0F(3.3=C3=82=C2=B0C) Wind:NE (040=C3=82=C2=B0) at 14mph
>> >> =
>> >> (12KT)
>> >> Writer: Someone who's never seen a chasm that didn't yawn.
>> >> Created by Weather Signature v1.5 =C3=A2=E2=82=AC=C2=A2 =
>> >> http://www.tropicdesigns.net Jesus Loves You!
>> >> My website: http://www.christiantraditions.info
>> >> The Blind Computer People List: >
>> >> http://christiantraditions.info/mailman/listinfo/blindcomputerpeople_chri=
>> >> stiantraditions.info
>> >>
>> >> -----Original Message-----
>> >> From: Tom Behler
>> >> Sent: Wednesday, March 12, 2014 9:10 AM
>> >> To: [log in to unmask]
>> >> Subject: Still troubleshooting my ocasional AL811 relay tripping issue
>> >>
>> >> Hi, all.
>> >>
>> >>
>> >>
>> >> As you may recall, I have a problem here where my AL811H amplifier =
>> >> relays occasionally trip when I am transmitting, and I'm trying to =
>> >> figure out why it happens.
>> >>
>> >>
>> >>
>> >> I have checked all of my connections between the TS590, my ARB704
>> >> buffer
>> >> =
>> >> box, and the AL811, and they seem to be firmly in place.
>> >>
>> >>
>> >>
>> >> I'm now starting to wonder if my amp relay tripping issue has
>> >> something =
>> >> to do with my TS590 rig settings.
>> >>
>> >>
>> >>
>> >> As I think I said before, I use between 60 and 65 watts to drive the =
>> >> amplifier, which, as far as I understand, is well within the limits =
>> >> prescribed by Amaritron.
>> >>
>> >>
>> >>
>> >> I checked some other settings on the TS590, though, and wonder if one
>> >> of
>> >> =
>> >> those is creating my problem.
>> >>
>> >>
>> >>
>> >> Currently, I have my mic gain set at 50, and my carrier set at 50.
>> >>
>> >>
>> >>
>> >> I have the PF2 button set for voice 2, which reads SWR and something =
>> >> else when I press the meter switch button and transmit.
>> >>
>> >>
>> >>
>> >> I'm not sure what that other function is, but I have noticed that when
>> >> I
>> >> =
>> >> back the carrier way down to say 13, that other meter function says A
>> >> 13
>> >> =
>> >> or 14, rather than A "over" when I have the carrier set to 50.
>> >>
>> >>
>> >>
>> >> I'm wondering if my carrier is set too high, and if I should back that
>> >> =
>> >> down considerably.
>> >>
>> >>
>> >>
>> >> Over the week-end, when I get more time, I'm going to follow Kelvin's
>> >> =
>> >> earlier-posted procedure for determining the maximum input power for =
>> >> driving the AL811H, and hopefully, that will help further.
>> >>
>> >>
>> >>
>> >> I'd appreciate any suggestions anyone might have for other things I =
>> >> might try.
>> >>
>> >>
>> >>
>> >> And, if someone can clarify the alternate voice 2 meter function, that
>> >> =
>> >> would be helpful as well.
>> >>
>> >>
>> >>
>> >>
>> >>
>> >> Tom Behler: KB8TYJ
|
