Sample point for scope
 

Being from a broadcast background and new to ham radio, I'm trying to
find sample ports to connect scopes and spectrum analyzers to radios and
dummy loads. I'm not finding any and have been simply using UHF Ts and
small loops of wire near finals and radio outputs as sample ports.

Am I missing something or is this normal?

What are other people doing to get a scope sample port on an antenna to
make power calculations?

I'm Ting off between the xmitter and tuner to feed the scope to look for
flat topping and power calculations as this point should be 50ohms but
suspect this is not normal as the xmitter output is fully feeding the
scope trhough a x10 probe.

Sample point for scope
 

No Spam wrote in
:

Being from a broadcast background and new to ham radio, I'm trying to
find sample ports to connect scopes and spectrum analyzers to radios
and dummy loads. I'm not finding any and have been simply using UHF Ts
and small loops of wire near finals and radio outputs as sample ports.

Am I missing something or is this normal?

What are other people doing to get a scope sample port on an antenna
to make power calculations?

I'm Ting off between the xmitter and tuner to feed the scope to look
for flat topping and power calculations as this point should be 50ohms
but suspect this is not normal as the xmitter output is fully feeding
the scope trhough a x10 probe.



I assume you are talking about SSB telephony.

If you are just wanting to monitor the waveform for flat topping,
absolute calibration is not necessary and you could just use another
short antenna as a pickup.

I would argue that an inline directional wattmeter with PEP peak hold
amplifier is a more reliable way to measure power, and is a more
reliable indicator of occasional voice peaks which you may well not see
on a CRO.

Owen

Sample point for scope
 

No Spam wrote:
Being from a broadcast background and new to ham radio, I'm trying to
find sample ports to connect scopes and spectrum analyzers to radios and
dummy loads. I'm not finding any and have been simply using UHF Ts and
small loops of wire near finals and radio outputs as sample ports.

Am I missing something or is this normal?

What are other people doing to get a scope sample port on an antenna to
make power calculations?

I'm Ting off between the xmitter and tuner to feed the scope to look for
flat topping and power calculations as this point should be 50ohms but
suspect this is not normal as the xmitter output is fully feeding the
scope trhough a x10 probe.

Sample point for scope
 

"No Spam" wrote in message
...
Being from a broadcast background and new to ham radio, I'm trying to
find sample ports to connect scopes and spectrum analyzers to radios and
dummy loads. I'm not finding any and have been simply using UHF Ts and
small loops of wire near finals and radio outputs as sample ports.

Am I missing something or is this normal?

What are other people doing to get a scope sample port on an antenna to
make power calculations?

I'm Ting off between the xmitter and tuner to feed the scope to look for
flat topping and power calculations as this point should be 50ohms but
suspect this is not normal as the xmitter output is fully feeding the
scope trhough a x10 probe.


I use a directional coupler. It is a sampling device.

John