[GE] GE MVP ICOM questions

[Thomas L. Staley Jr.]

Hello Chris,


    I have a few more questions.  Please see below.


Tom

Cboone@earthlink.net wrote:

> ICOMs?? As in the MII ICOMs or the MVP open xtal elements???
>

MVP


>
> The 2C ICOM can be used on both TX and RX of the MVP IF YOU wish..
> it was required in the MVP for base/control station use under Part
> 90 and 95..the rcvr was stable enough....The standard elements are 5ppm.
> You DO need the adaptor board which allows the ICOMs to be plugged
> in and then it connects to there the open elements would go..
>

Well I don't know about this board.  I have the 'multi channel' board in the
radio.  The ICOMs plug into this.


>
> High side vs low side....you can use any ICOM/element you wish as
> long as the xtal works in it...there are NO tuned elements in either
> one..
>

Is this true across the various bands also?



>
> On UHF radios, I have installed the xtals myself...but if you feel
> unsure about that yourself, send the ICOMs to ICM or whoever you buy
> xtals from...The open elements are easy to do yourself..BUT I never
> have any problem either way with the ICOMs..
>
> BUT in your temp range, I would definitely use the ICOMs on BOTH TX
> and RX and have the factory put the xtals in and align the elements..
> Also NOTE if you donot use the ICOMs, the temp compensate line
> on the exciter WILL pull the rcvr xtal off freq in rptr mode...
>

Is there an option of not using the ICOMs?



> With the 2C elements ONLY, there is no problem....If you use the
> 5C ICOM or the std xtal elements, you WILL have the problem unless
> you modify the rcvr for a FIXED 3.9V DC into the element...
> I always do that for MVPs..
>

What is the std xtal elements.  Is there an option of not using ICOMs and just
using a crystal?



>
> Chris
> WB5ITT
>
> "Thomas L. Staley Jr." wrote:
> >
> > Hello All,
> >
> >     I have a few questions about MVP ICOMs.  I have searched but not
> > found a list of ICOM numbers for any band but UHF, is there a list for
> > the other bands that I have missed?
> >
> > I am interested in the 2ppm  versions.  I appears that this would apply
> > only to the TX side?
> >
> > I an also interested in high side injection vs the normal low side
> > injection.  I see that there are different ICOM part numbers for this.
> > Is there any real difference? i.e. can I use a low side injection ICOM
> > in a high side application?
> >
> > In other words, how interchangeable are the various  MVP ICOMs?
> >
> > Would buying the crystals and me tuning the ICOM vs having the whole
> > thing sent out be the way to go?  I'm new to this without much RF
> > equipment.  The machine will need to operate in a temperature range from
> >
> > about -10 to 110 degrees F.
> >
> > Thanks,
> > Tom N8LBT
> >