I'm assuming this is a CW beacon?
I would think that whether rockbound or synthesized, you'd probably be best
off having the oscillator running all the time and keying RF at a gain or
multiplier stage. You might have to do some keying waveform shaping to
avoid "keyclicks". I'd take a real close look at the output spectra with
something capable of catching transients or any spurs that occur during the
keying ramps; maybe key it on/off at a rapid rate repeatedly while doing a
peak-hold with the SA for a few minutes to look for any anomalies as a first
pass.
--- Jeff WN3A
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Jeff KP3FT
> Sent: Sunday, August 29, 2010 1:16 PM
> To: [email protected]
> Subject: RE: [Repeater-Builder] dumb question: what is
> purpose of lock on Mitrek?
>
>
>
> Thanks guys. Looks like this radio might work; need
> something for a 6-meter beacon transmitter. Tried a Mocom
> but it wasn't functional. Tried a Maxtrac but the carrier
> was really squirrely even when I tried the various mods, must
> be due to the PLL instead of crystal-control. Have to see
> how the carrier sounds on the Mitrek; if it's good I'll have
> one of the TX channel elements re-crystalled. Been trying to
> get something for a 6-meter beacon that doesn't cost a
> fortune, on and off for the past few years between other
> projects, and finding it a lot more difficult than it was
> finding a suitable 10-meter beacon transmitter! Learning a
> lot in the process though, that's a good thing...
> 73
> Jeff KP3FT
>
> --- On Sun, 8/29/10, Eric Lemmon <[email protected]> wrote:
>
>
>
> From: Eric Lemmon <[email protected]>
> Subject: RE: [Repeater-Builder] dumb question: what is
> purpose of lock on Mitrek?
> To: [email protected]
> Date: Sunday, August 29, 2010, 12:56 PM
>
>
>
>
> Jeff,
>
> The reason that most trunk-mount radios are locked is
> to prevent theft and
> tampering. The lock has no electrical function. You
> will need the
> ubiquitous #2135 key to unlock your Mitrek drawer. You
> definitely want to
> open up the radio before applying power to it, so that
> you can ascertain if
> the channel elements are in place, and what optional
> components are
> installed. Since Motorola shipped two keys with every
> radio sold, most
> radio shops will have a drawer full of #2135 keys. If
> you ask, you will
> likely get one or two free.
>
> 73, Eric Lemmon WB6FLY
>
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of KP3FT
> Sent: Sunday, August 29, 2010 9:09 AM
> To: [email protected]
> Subject: [Repeater-Builder] dumb question: what is
> purpose of lock on
> Mitrek?
>
> Hi,
> I know it's a dumb question, but after scouring the
> internet for info, I
> find everything about locks and replacement keys for
> Motorolas and other
> radios, but I still don't know what locking the Mitrek
> actually does. Does
> it kill all power to the radio, or disable certain
> functions? I'm asking
> because I just acquired a low-band Mitrek that I need
> to power up and verify
> its working condition. It doesn't have a control head,
> so I need to use the
> front panel pins, but if the radio is locked, I may end
> up getting nowhere
> and still not know if it's either the radio that is
> bad, it is locked out,
> or I wired it wrong. This is the first Mitrek I've had.
> Thanks for any help.
> Jeff KP3FT
>
>
>
>
>
>
