you can turn it off easily, but it is suppose to while it is on, 
interrupt the received frequency every 3 seconds checking the input frequency.

At 11:48 AM 05/25/13, you wrote:
>does it show something on the display every 3 seconds?
>Seems to me it could check the input frequency and still receive the
>repeater output frequency at the same time without interupting the receive
>frequency audio...probably something shows on the display and it doesn't
>actually interupt the audio.
>something interupting the receive audio every 3 seconds would be very
>anoying...
>
>73
>Colin, V A6BKX
>----- Original Message -----
>From: "Curtis Delzer" <[log in to unmask]>
>To: <[log in to unmask]>
>Sent: Saturday, May 25, 2013 12:00 PM
>Subject: Re: tmv-71
>
>
> > thanks, but my offset is already set, I get into our local repeater
> > fine, just that SFC, or "simplex frequency checker," doesn't seem to
> > do than give me a high beep when I hold down the "reverse" button
> > more than a second.
> > It is suppose to occasionally, (every 3 seconds) interrupt the output
> > to check the offset to see if the given input frequency is occupied
> > by the same signal as comming through the repeater.
> > But, all I get is a high beep and no change.
> >
> > At 10:21 AM 05/25/13, you wrote:
> >>Yeah, but it doesn't answer his question about the simplex checker.
> >>
> >>Steve
> >>
> >>----- Original Message -----=20
> >>=46rom: "Howard Kaufman" <[log in to unmask]>
> >>To: <[log in to unmask]>
> >>Sent: Saturday, May 25, 2013 05:23
> >>Subject: Re: tmv-71
> >>
> >>
> >> >I found this in the tmv-71 A manual.
> >> > Hope this helps.  I can send you the folder if you want.
> >> >
> >> > Here goes.
> >> >
> >> >
> >> >
> >> > REPEATER ACCESS
> >> >
> >> > Most repeaters use a receive and transmit frequency pair with a sta=
> >>ndard=20
> >> > or
> >> >
> >> > non-standard offset (odd-split). In addition, some repeaters must r=
> >>eceive=20
> >> > a
> >> > tone
> >> >
> >> >
> >> >
> >> > from the transceiver in order to gain access to the repeater. For d=
> >>etails,
> >> >
> >> > consult
> >> >
> >> > your local repeater reference.
> >> >
> >> >
> >> >
> >> >
> >> >
> >> > Selecting an Offset Direction
> >> >
> >> > The offset direction allows your transmit frequency to be higher (+=
> >>) or
> >> > lower
> >> >
> >> > (-)
> >> >
> >> > than the receive frequency.
> >> >
> >> > 1 Select your desired band (A or B).
> >> >
> >> > 2 Press [F], [REV] to select an offset direction.
> >> >
> >> > =B7 Each time you press [F], [REV], the offset direction changes as=
> >>  follows:
> >> >
> >> > Simplex operation >> + >> - >> Simplex operation
> >> >
> >> > =B7 If you are using an E type transceiver, when operating on the 4=
> >>30 MHz
> >> > band,
> >> >
> >> > the
> >> >
> >> > offset direction changes as follows:
> >> >
> >> > Simplex operation >> + >> - >> =3D (-7.6 MHz) >> Simplex operation
> >> >
> >> > If the offset transmit frequency falls outside the allowable range,
> >> > transmitting
> >> >
> >> >
> >> >
> >> > is inhibited. Use one of the following methods to bring the transmi=
> >>t
> >> > frequency
> >> >
> >> > within the band limits:
> >> >
> >> > =B7 Move the receive frequency further inside the band.
> >> >
> >> > =B7 Change the offset direction.
> >> >
> >> > Note: While using an odd-split memory channel or transmitting, you =
> >>cannot
> >> > change
> >> >
> >> > the offset direction.
> >> >
> >> >
> >> >
> >> >
> >> >
> >> > Selecting an Offset Frequency
> >> >
> >> > The offset frequency is the value which the transmit frequency will=
> >>  be
> >> > offset
> >> >
> >> > from the receive frequency. The default offset frequency on the 144=
> >>  MHz
> >> >
> >> > band is 600 kHz for all type versions. The default on the 430/440 M=
> >>Hz band
> >> > is 5
> >> >
> >> > MHz.
> >> >
> >> > 1 Select your desired band (A or B).
> >> >
> >> > 2 Enter Menu mode and access Menu 400 (OFFSET).
> >> >
> >> > 3 Set the appropriate offset frequency value.
> >> >
> >> > =B7 The selectable range is from 00.00 MHz to 29.95 MHz, in steps o=
> >>f 50 kHz.
> >> >
> >> > Note: After changing the offset frequency, the new offset frequency=
> >>  will
> >> > also be
> >> >
> >> > used by
> >> >
> >> > Automatic Repeater Offset.
> >> >
> >> >
> >> >
> >> > This is probably more than you want to know.
> >> >
> >> > Curtis I am copying my folder in to our drop box folder.
> >> >=20