Re: [TV_Antennas] Re: Is amplifier broke?


Jul 18, 2013

 


----------------------------

#718 Jul 18, 2013

I have a five year old Channel Master TV antenna amplifier model:7777.

How do I know :

1. Is it working?

2. If it is, at what level is it's operating at? (Example - 30%)

3. How do I determine(test) the outside component vs.

the inside component.

Thank you.

mike



----------------------------

#719 Jul 18, 2013

On 7/18/2013 7:04 PM, John wrote: > I have a five year old Channel Master TV antenna amplifier model:7777.

> How do I know :

> 1. Is it working?

> 2. If it is, at what level is it's operating at? (Example - 30%)

> 3. How do I determine(test) the outside component vs.

> the inside component.

> Thank you.

> mike

>

Hook it up and make sure your antenna is pointed at a signal that is

farthest away.

Then unplug and see if the signal drops.

Of course you have to be pointed at a station that is hard to get.







--

All the Best & 73's

Dale Miller, KC2CBD

Tennessee

Ham Operator since 1997

Member of YahooPipesmokers and ASP since February 2005



Registered Linux User: #317401

Linux since June 2003

Registered Ubuntu User #26423



stpatrick3spam@...

stpatrick2spam@...

stpatrick3spam@...

bdchimneysweepspam@...



(cut the spam to reply)





VOTE TO REBUILD!

www.twintowersalliance.com

__



----------------------------

#720 Jul 19, 2013

I don't think that will work as a valid test. When you unplug the power supply the mast amp section will not bypass the signal, it will actully attenuate it. A valid test would require a calibrated signal generator and measuring device. you first inject the signal directly into the measuing device (such as a scanning receiver set to a vhf or uhf tv frequency of interest then insert the amplifier between the signal gen and receiver and measure the gain or db difference betwwen the the amplifier connected and removed. If the amplifier is working you should see a gain 10 db or more with it in the circuit.

Otherwise hook it up and check a weak signal and the remove it and not the change.





--- In TV_Antennas@yahoogroups.com, Dale Miller stpatrick2@...> wrote:

>

> On 7/18/2013 7:04 PM, John wrote:

> > I have a five year old Channel Master TV antenna amplifier model:7777.

> > How do I know :

> > 1. Is it working?

> > 2. If it is, at what level is it's operating at? (Example - 30%)

> > 3. How do I determine(test) the outside component vs.

> > the inside component.

> > Thank you.

> > mike

> >

> Hook it up and make sure your antenna is pointed at a signal that is

> farthest away.

> Then unplug and see if the signal drops.

> Of course you have to be pointed at a station that is hard to get.

>

>

>

> --

> All the Best & 73's

> Dale Miller, KC2CBD

> Tennessee

> Ham Operator since 1997

> Member of YahooPipesmokers and ASP since February 2005

>

> Registered Linux User: #317401

> Linux since June 2003

> Registered Ubuntu User #26423

>

> stpatrick3spam@...

> stpatrick2spam@...

> stpatrick3spam@...

> bdchimneysweepspam@...

>

> (cut the spam to reply)

>

>

> VOTE TO REBUILD!

> www.twintowersalliance.com

> __

>



----------------------------

#721 Jul 20, 2013

Hello,

I like the idea of aiming antenna to the (signal that is > farthest away).

I think that the outside component (as a stand-alone )might block the signal to TV.

mike

--- In TV_Antennas@yahoogroups.com, Dale Miller stpatrick2@...> wrote:

>

> On 7/18/2013 7:04 PM, John wrote:

> > I have a five year old Channel Master TV antenna amplifier model:7777.

> > How do I know :

> > 1. Is it working?

> > 2. If it is, at what level is it's operating at? (Example - 30%)

> > 3. How do I determine(test) the outside component vs.

> > the inside component.

> > Thank you.

> > mike

> >

> Hook it up and make sure your antenna is pointed at a signal that is

> farthest away.

> Then unplug and see if the signal drops.

> Of course you have to be pointed at a station that is hard to get.

>

>

>

> --

> All the Best & 73's

> Dale Miller, KC2CBD

> Tennessee

> Ham Operator since 1997

> Member of YahooPipesmokers and ASP since February 2005

>

> Registered Linux User: #317401

> Linux since June 2003

> Registered Ubuntu User #26423

>

> stpatrick3spam@...

> stpatrick2spam@...

> stpatrick3spam@...

> bdchimneysweepspam@...

>

> (cut the spam to reply)

>

>

> VOTE TO REBUILD!

> www.twintowersalliance.com

> __

>



----------------------------

#722 Jul 20, 2013

Hello,

Thank you for responding.



That does make sense to me.



I do not have any devices & even if I did, I would not know how to use them.



At this moment I think that I will just compare performance;

1. With both two-piece amplifier

vs.

No two-piece amplifier.

mike



--- In TV_Antennas@yahoogroups.com, "bmccarrey" bmccarrey@...> wrote:

>

> I don't think that will work as a valid test. When you unplug the power supply the mast amp section will not bypass the signal, it will actully attenuate it. A valid test would require a calibrated signal generator and measuring device. you first inject the signal directly into the measuing device (such as a scanning receiver set to a vhf or uhf tv frequency of interest then insert the amplifier between the signal gen and receiver and measure the gain or db difference betwwen the the amplifier connected and removed. If the amplifier is working you should see a gain 10 db or more with it in the circuit.

> Otherwise hook it up and check a weak signal and the remove it and not the change.

>

>

>

> --- In TV_Antennas@yahoogroups.com, Dale Miller stpatrick2@> wrote:

> >

> > On 7/18/2013 7:04 PM, John wrote:

> > > I have a five year old Channel Master TV antenna amplifier model:7777.

> > > How do I know :

> > > 1. Is it working?

> > > 2. If it is, at what level is it's operating at? (Example - 30%)

> > > 3. How do I determine(test) the outside component vs.

> > > the inside component.

> > > Thank you.

> > > mike

> > >

> > Hook it up and make sure your antenna is pointed at a signal that is

> > farthest away.

> > Then unplug and see if the signal drops.

> > Of course you have to be pointed at a station that is hard to get.

> >

> >

> >

> > --

> > All the Best & 73's

> > Dale Miller, KC2CBD

> > Tennessee

> > Ham Operator since 1997

> > Member of YahooPipesmokers and ASP since February 2005

> >

> > Registered Linux User: #317401

> > Linux since June 2003

> > Registered Ubuntu User #26423

> >

> > stpatrick3spam@

> > stpatrick2spam@

> > stpatrick3spam@

> > bdchimneysweepspam@

> >

> > (cut the spam to reply)

> >

> >

> > VOTE TO REBUILD!

> > www.twintowersalliance.com

> > __

> >

>







----------------------------

#723 Jul 21, 2013

Hello all,

This morning I removed both two-piece amplifier

( inside component & outside component ).

My TV signals are coming in better.

Perhaps it was an age-related decline.

Does any body know what the life expectancy of a

Channel Master 7777 amplifier is ?

Thank you,

mike

---------------





With both two-piece amplifier

--- In TV_Antennas@yahoogroups.com, "John" antennagarden@...> wrote:

>

> Hello,

> Thank you for responding.

>

> That does make sense to me.

>

> I do not have any devices & even if I did, I would not know how to use them.

>

> At this moment I think that I will just compare performance;

> 1. With both two-piece amplifier

> vs.

> No two-piece amplifier.

> mike

>

>

> --- In TV_Antennas@yahoogroups.com, "bmccarrey" bmccarrey@> wrote:

> >

> > I don't think that will work as a valid test. When you unplug the power supply the mast amp section will not bypass the signal, it will actully attenuate it. A valid test would require a calibrated signal generator and measuring device. you first inject the signal directly into the measuing device (such as a scanning receiver set to a vhf or uhf tv frequency of interest then insert the amplifier between the signal gen and receiver and measure the gain or db difference betwwen the the amplifier connected and removed. If the amplifier is working you should see a gain 10 db or more with it in the circuit.

> > Otherwise hook it up and check a weak signal and the remove it and not the change.

> >

> >

> >

> > --- In TV_Antennas@yahoogroups.com, Dale Miller stpatrick2@> wrote:

> > >

> > > On 7/18/2013 7:04 PM, John wrote:

> > > > I have a five year old Channel Master TV antenna amplifier model:7777.

> > > > How do I know :

> > > > 1. Is it working?

> > > > 2. If it is, at what level is it's operating at? (Example - 30%)

> > > > 3. How do I determine(test) the outside component vs.

> > > > the inside component.

> > > > Thank you.

> > > > mike

> > > >

> > > Hook it up and make sure your antenna is pointed at a signal that is

> > > farthest away.

> > > Then unplug and see if the signal drops.

> > > Of course you have to be pointed at a station that is hard to get.

> > >

> > >

> > >

> > > --

> > > All the Best & 73's

> > > Dale Miller, KC2CBD

> > > Tennessee

> > > Ham Operator since 1997

> > > Member of YahooPipesmokers and ASP since February 2005

> > >

> > > Registered Linux User: #317401

> > > Linux since June 2003

> > > Registered Ubuntu User #26423

> > >

> > > stpatrick3spam@

> > > stpatrick2spam@

> > > stpatrick3spam@

> > > bdchimneysweepspam@

> > >

> > > (cut the spam to reply)

> > >

> > >

> > > VOTE TO REBUILD!

> > > www.twintowersalliance.com

> > > __

> > >

> >

>



----------------------------

#724 Jul 23, 2013

There are several possible causes:

.- corroded contacts

.- corroded connectors or cables

.- zapped electronics (amp)

.- zapped power supply.

.

The amp will last if the water and lightening is kept out, but F-Conn are leaky & likely to corrode (the pros use gold-plated .N-Conn)..

.

...Don Doughty,





---------------

From: John antennagarden@...>

To: TV_Antennas@yahoogroups.com

Sent: Sunday, July 21, 2013 5:15 PM

Subject: [TV_Antennas] Re: Is amplifier broke?







.

Hello all,

This morning I removed both two-piece amplifier

( inside component & outside component ).

My TV signals are coming in better.

Perhaps it was an age-related decline.

Does any body know what the life expectancy of a

Channel Master 7777 amplifier is ?

Thank you,

mike

---------------



With both two-piece amplifier

--- In TV_Antennas@yahoogroups.com, "John" antennagarden@...> wrote:

>

> Hello,

> Thank you for responding.

>

> That does make sense to me.

>

> I do not have any devices & even if I did, I would not know how to use them.

>

> At this moment I think that I will just compare performance;

> 1. With both two-piece amplifier

> vs.

> No two-piece amplifier.

> mike

>

>

> --- In TV_Antennas@yahoogroups.com, "bmccarrey" bmccarrey@> wrote:

> >

> > I don't think that will work as a valid test. When you unplug the power supply the mast amp section will not bypass the signal, it will actully attenuate it. A valid test would require a calibrated signal generator and measuring device. you first inject the signal directly into the measuing device (such as a scanning receiver set to a vhf or uhf tv frequency of interest then insert the amplifier between the signal gen and receiver and measure the gain or db difference betwwen the the amplifier connected and removed. If the amplifier is working you should see a gain 10 db or more with it in the circuit.

> > Otherwise hook it up and check a weak signal and the remove it and not the change.

> >

> >

> >

> > --- In TV_Antennas@yahoogroups.com, Dale Miller stpatrick2@> wrote:

> > >

> > > On 7/18/2013 7:04 PM, John wrote:

> > > > I have a five year old Channel Master TV antenna amplifier model:7777.

> > > > How do I know :

> > > > 1. Is it working?

> > > > 2. If it is, at what level is it's operating at? (Example - 30%)

> > > > 3. How do I determine(test) the outside component vs.

> > > > the inside component.

> > > > Thank you.

> > > > mike

> > > >

> > > Hook it up and make sure your antenna is pointed at a signal that is

> > > farthest away.

> > > Then unplug and see if the signal drops.

> > > Of course you have to be pointed at a station that is hard to get.

> > >

> > >

> > >

> > > --

> > > All the Best & 73's

> > > Dale Miller, KC2CBD

> > > Tennessee

> > > Ham Operator since 1997

> > > Member of YahooPipesmokers and ASP since February 2005

> > >

> > > Registered Linux User: #317401

> > > Linux since June 2003

> > > Registered Ubuntu User #26423

> > >

> > > stpatrick3spam@

> > > stpatrick2spam@

> > > stpatrick3spam@

> > > bdchimneysweepspam@

> > >

> > > (cut the spam to reply)

> > >

> > >

> > > VOTE TO REBUILD!

> > > www.twintowersalliance.com

> > > __

> > >

> >

>









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