New Ham Question about 2 meter Amplifier

[KJ6GEV]

I just got a new 2 Meter RM Linear Amplifier for my IC-7000. 2 questions:

1. Knowing that it only works on 144-148 Mhz, if I TX out on the 70cm band on my radio with the amplifier on, does the amp bypass that 70cm output and forward to the multiband antenna?
2. If I wish to use low power on 2 meter (just radio power output) can I turn the amp off? i.e. will the switched off amp pass the 2 meter output from the radio to the 2m/70cm antenna?

Thanks for the help.

KJ6GEV
     

[K3GM]

Which model?

[KA5N]

If turned off the Model 145 (for example) will bypass the amplifier portion of the amp.  So the signal from the transceiver will show up at the amp output.  However the amp can't tell whether you are inputting a 2 meter, 70 cm or a broadcast frequency, so it is up to you to make sure you are inputting only 2 meter signals when you have the amp on.  If you are not careful you many damage the amp or your transceiver or both.  With the amp off whatever you put in will be present at the output.
Suggestion:  Read the manual and study the circuit diagrams (they are available online).

Allen

[AD5X]

You need to check the bypassed SWR at 70cm.  I bet that the internal bypass circuitry of the 2-meter amp looks pretty poor on 70cm.  I could be wrong, but I suspect not.

Phil - AD5X

[K6AER]

Also make sure the 2 meter low pass filter is not in the bypass line.

[KM3F]

Answer #1. you cannot transmitt thru a 2m amp on 70cm with the amp "able to key up".
Turn it off and it will pass the 70cm signal right through. Then you need the antenna to work on 70cm as well not 2m unless the antenna is a dual band design.
#2. yes, the same applies as in #1. An amp not able to key up will pass your low power 2m transmitt power to the antenna the same way.  Same again. The antenna connected must be a 2m or a dual band design.