can you Transmit...

[spiritwolfpr]

Hello Friends:

I wonder if one can transmit on a scanner Hand held
atenna in a Emergency will the lost be to big for
a signal to be transmited??

Thanks
Rafael

 

[Don_Burke]

I would count on enough loss to make it useless.

It would be better to have an extra antenna for the unit doing the transmitting.

Hello Friends:

I wonder if one can transmit on a scanner Hand held
atenna in a Emergency will the lost be to big for
a signal to be transmited??

Thanks
Rafael

 

[N4JNW]

For a short burst, it probably wouldn't hurt anything.

Keep in mind, though the scanner duckie is widebanded, you're going to be transmitting some harmonics..

Keep the power to a minimum, and your transmissions short, and you can transmit off of almost anything. Transmitting with an out of tune antenna isn't what kills a radio, it's the HEAT that is generated by a impedance mismatch that fries transistors and componenets.

I may be wrong, I'm sure I will rudely be corrected by "someone", so take my advice with a grain of salt.

 

[RayK]

I may be wrong, I'm sure I will rudely be corrected by "someone", so take my advice with a grain of salt.

Why would feel if corrected by someone it would be rude ,are you the expert here .
Did someone make you king.

 

[tbnmaster]

Why would feel if corrected by someone it would be rude ,are you the expert here .
Did someone make you king.

He didn't say being corrected would be rude. There's a difference between being corrected and being "rudely corrected"....

 

[spiritwolfpr]

hello Friends:

Thank you every one for the help

 

[nd5y]

It depends on what kind of antenna you have and what frequency you want to transmit on.
I checked all of mine with a MFJ-269 analyzer and I can tell you that:

BCD396T stock antenna is resonant around 161 MHz
PRO-95 stock antenna is resonant around 150 MHz
Radio shack long rubber duckie 20-034 is resonant around 52 and 146 MHz
None of them are resonant on UHF
and I don't have access to anything that will check 174-400 MHz or higher than 470 MHz.

These are all several years old so I don't know if all scanner antennas are the same of if the manufacturers ever change designs or change the vendors that supply them.

Sometimes I miss my old job. I had access to a lot of expensive RF lab equipment.

 

[kb2vxa]

Hi Wolf and all,

There is virtually no difference between a scanner duck and an HT duck. Never mind what the clueless pimple puss at Rat Shack says, they're mono or dual band antennas and not particularly resonant (see the above post where the frequency varies and so does the impedance BTW) so you can take it from there. An HT will tolerate some pretty awful SWR which is what you get with anything but an external resonant antenna or dummy load.

For example, some years ago I acquired a marine band portable with no antenna. It was one of those oddball screw in jobs and I couldn't obtain one from the usual sources but found a suitable scanner duck at Rat Shack, it works just fine.