Howard,
I put on my experimenter's hat and hooked up the 480, which is now the
back-up to the back-up radio. I've always found the TW-1 to be a bit
low in the power readings. I have another device here, an old
Wavenode WN-1, which isn't really blind friendly, although it does have
some speech.
Numbers below show band followed by the power spoken by TW-1, followed
in parenthesis by the power shown by the Wavenode.
160 = 100 (105)
80 =96 (105)
40 = 90 (104)
30 = 91 (103)
20 = 86 (102)
17 = 80 (100)
12 =68 (96)
10 = 65 (80)
As you can see, the TW-1 seems to drop off as you go higher in
frequency. Now the little boy in the first row asks "How do you know
the Wavenode is the accurate one?" The truth is I can't be sure, but
here is the deal:
The Wavenode is computer controlled with a inline coax sensor. It
reads the RF every 5 ms. or 20 times a second. None of that means it
is any better than the TW-1 or anything else, but the Wavenode always
more closely matches the power setting of any radio it is connected to,
as compared to the TW-1. Also the Wavenode more closely matches the
spoken RF output meter of the TS-590, again as compared to the TW-1.
I'd be interested to hear what your friend with the Bird meter says.
If you still get screwy numbers, you may want to check your carrier
level setting. These settings can get screwed up easy and low carrier
level will give low output on carrier modes, although I think it is not
band specific, and you seem to get some high numbers with your TW-1.
I'd think 3 or 4 times before messing around in the service menus. If
you are convinced there is a problem, I would do a reset of the radio.
Bottom line: The numbers you post are what I would expect from my own
TW-1, with the exception of 160. Maybe the tuner was in line on that band?
Sorry this was so long.
73, Steve KW3A
On 8/16/2012 4:36 AM, Howard Kaufman wrote:
> I was using a straight key in the CW position. I see a 1.2 SWR on the
> internal dummy load in the tuner.
> I am wondering about the possibility of consistent inaccureacy of the TW1,
> so I will invite a friend over with a Byrd to see what that shows.
> If you or anybody else here has a ts-480 SAT, I'd appreciate knowing what
> they get for power output with a similar test.
> 48 watts on 160, 96 qwatts on 80, 95 watts on 40, 99 watts on 60, 97 on 30,
> 85 on 20, 91 on 17, 86 on 15, 85 on 12, 82 at the bottom of 10, 12 on 6.
> I am beginning to suspect the TW1, so if somebody else can try the same
> test, the results would be interesting.
>
>
>
|