From: Brett gazdzinski [EMAIL PROTECTED]
Don,
Does that do pep?
Can you warm something up on the thermocouple?
No, it reads RMS feedline current in amps. Working into a dummy load of
known resistance, watts output can be calculated by Ohm's law. On the real
antenna, I just use it to
I got an Autek meter off ebay, see the link below...
http://cgi.ebay.com/Autek-Research-WM-1-Computing-Meter_W0QQitemZ5872349614Q
QcategoryZ1502QQrdZ1QQcmdZViewItem
Other nice looking meters were a radio craft 3000 pro,
http://www.radiocraft-eng.com/3000-Pro.html
Nye-viking made something
Brett gazdzinski wrote:
I got an Autek meter off ebay, see the link below...
I just bought a Heathkit SA-2060A tuner, with meters built in, at a
recent hamfest.
I currently use a Heathkit SA-2060 tuner, on my 75m full-wave loop, fed
with 450-ohm ladder line.
Tomorrow morning, I
]
[mailto:[EMAIL PROTECTED] On Behalf Of W5OMR/Geoff
Sent: Tuesday, March 07, 2006 10:12 AM
To: Discussion of AM Radio
Subject: Re: [AMRadio] watt meter
Brett gazdzinski wrote:
I got an Autek meter off ebay, see the link below...
I just bought a Heathkit SA-2060A tuner, with meters
Brett gazdzinski wrote:
I think that is the tuner I have.
The watt meters are not pep though.
The tuner works great, the balun is not good for any power
if things are wacko with the swr...
I bought it new from heathkit in Philadelphia a LONG time ago!
Brett
is it the 2060 or the 2060A? I
: Tuesday, March 07, 2006 4:46 PM
To: Discussion of AM Radio
Subject: Re: [AMRadio] watt meter
Brett gazdzinski wrote:
I think that is the tuner I have.
The watt meters are not pep though.
The tuner works great, the balun is not good for any power
if things are wacko with the swr...
I
of AM Radio'
Subject: RE: [AMRadio] watt meter
What is everyone doing for a watt meter?
My swan wm-3000 blew up last weekend, it reads no pep
and about 1/4 of the correct average power.
I could fix it if I could find out what diodes they used (3 gone),
and one of the little inducters broke
gazdzinski [EMAIL PROTECTED]
To: 'Discussion of AM Radio' amradio@mailman.qth.net
Sent: Wednesday, March 01, 2006 6:36 PM
Subject: RE: [AMRadio] watt meter
If I could find out the diode type, I could replace them,
the inductor looks to be a match with another one
(forward/reflected?).
It's a small
The Best measurement I ever got was using a dummy load of know resistive
accuracy. I used a new Cantenna from heath kit. I said new because if
over heated once they can change resistance. The older one seemed to be
better.
I use a dummy load made of a dozen 600-ohm Glo-Bar resistors in
What is everyone doing for a watt meter?
My swan wm-3000 blew up last weekend, it reads no pep
and about 1/4 of the correct average power.
I could fix it if I could find out what diodes they used (3 gone),
and one of the little inducters broke, but it
would not be calibrated.
It was a good
Try W7RF, Radiodan, at the link below. I personally like Bird meters
and he has a good assortment of new and used meters. Some are PEP ready
or you can buy a kit (either original Bird or a knockoff) to convert a
regular Model 43 to PEP. They are designed for continuous duty and you
can get
I have a Bird 4411 which uses one slug for 2-30 Mcy. The meter has a switch
that will change the power scale from 10 watts to 10K watts.
It is not a true peak meter but there is a formula that derives it in the
book. The 4411 is a 4410 with provisions for AC input, the 4410 is 9V
battery
This is just a guess, but a lot of older watt meters used 1N60 diodes.
The inductor is most likely in the 250 - 275 uh range.
73,
Rick/K5IZ
What is everyone doing for a watt meter?
My swan wm-3000 blew up last weekend, it reads no pep
and about 1/4 of the correct average power.
I
Brett gazdzinski wrote:
What is everyone doing for a watt meter?
I use a scope, plate current and plate voltage meters.
Final efficiency is typically 75% - so, 1500v @ 200mA = 300w DC input is
close to 225w carrier output.
If you don't use a tuner, and know that your antenna is resonant
PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Rick Brashear
Sent: Wednesday, March 01, 2006 4:37 PM
To: Discussion of AM Radio
Subject: Re: [AMRadio] watt meter
Try W7RF, Radiodan, at the link below. I personally like Bird meters
and he has a good assortment of new and used meters. Some
Brashear [EMAIL PROTECTED]
To: Discussion of AM Radio amradio@mailman.qth.net
Sent: Wed, 01 Mar 2006 15:36:38 -0600
Subject: Re: [AMRadio] watt meter
Try W7RF, Radiodan, at the link below. I personally like Bird
meters and he has a good assortment of new and used meters. Some
are PEP ready or you
If I could find out the diode type, I could replace them,
the inductor looks to be a match with another one
(forward/reflected?).
It's a small potted thing, almost looks like a cross
between a resistor and a small electrolytic cap.
I don't know how you would calibrate it for average and pep,
around the house and yard
with a walkman, its over a watt I think...
Brett
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of W5OMR/Geoff
Sent: Wednesday, March 01, 2006 6:26 PM
To: Discussion of AM Radio
Subject: Re: [AMRadio] watt meter
Brett
Don,
Does that do pep?
Can you warm something up on the thermocouple?
Brett
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Donald Chester
Sent: Wednesday, March 01, 2006 7:17 PM
To: amradio@mailman.qth.net
Subject: RE: [AMRadio] watt meter
: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Rick Brashear
Sent: Wednesday, March 01, 2006 5:40 PM
To: Discussion of AM Radio
Subject: Re: [AMRadio] watt meter
This is just a guess, but a lot of older watt meters used
1N60 diodes.
The inductor is most likely in the 250 - 275 uh
Brett gazdzinski wrote:
Think the FCC will buy it?
What if they come around and say they are sure you
had a few peaks over 1600 watts?
No one has said anything to me running 100w, and 4:1 asymetrical
positive-to-negative ratio peaks in the last 4 years.
I am sure they are just waiting
There may be a manual on BAMA. If not, quite likely you can locate a
schematic indicating the part numbers you need. I feel sure you'd be
safe with just about any diode in the 1N60/1N34 category.
73,
Rick/K5IZ
Brett gazdzinski wrote:
The diodes looked like 1n34a's, but who knows.
I think
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