Adjusting synthesizer warp on Saber ?

[RadioSouth]

I've got a few Sabers, all were right on the money far as Tx freq. I changed some frequencies without creating a new RPF and after writing them to the radio Tx freq's. are 45-80 Kc low in frequency. I go to the alignment menu and find the synthesizer warp and try to adjust. After increasing the warp a couple of steps I can't find how to save these tuning values to the radio. It's not like some of the other series where you key the radio via a computer 'F' key and it then saves the value, I tried downloading the new warp value to the radio via codeplug download but apparently the tuning value is not part of the Saber's codeplug. So what am I missing ?

[Tom in D.C.]

I haven't done this to a Saber for a while, so I went to my Software User's Guide
for R07.01.00 which I believe is the same as the R06 setup. Anyway, it says on
page 32 that the warp adjustment is done in real time and that you don't have to
reprogram the radio to have the adjustment take effect. It also says you should
be able to see the changes made on a frequency counter immediately after
you've either raised or lowered the frequency.

Other than that I can't tell you why your radio is apparently not responding to the
frequency change commands.

[DJP126]

First, your right, the Saber program IS different. With this in mind, try this.

From the MAIN menu press f2 then f3.
Key the radio & check freq error, unkey the radio. Change the freq error setting then key the radio , check and unkey. (Repeat this until you have minimum error).

Press Esc, f3, f8 and then f2.

[kb0nly]

Dave is correct!

Though the adjust does take place in real time you have to exit out and reprogram the entire codeplug and use the RPF values, F2, when it asks you which tuning values to use.

[RadioSouth]

Thanks for the help gentlemen. Turns out I was apparently entering a frequency (which the programming accepted) which the Saber isn't capable of. I was putting in a GMRS simplex of 462.5625 which is a 25 KHz channel but I guess it doesn't follow the normal VHF bandplan. Well rather than rounding it off or telling me it was an invalid freq. the radio kinda took a hissy fit with it and wouldn't allow a synthesizer warp adjustment. The Tx error ranged from +25 KHz to +55 on the different
GMRS simplex channels. Putting more normal channels in it like 462.55
and it was right back on frequency.

[DJP126]

I was putting in a GMRS simplex of 462.5625 which is a 25 KHz channel

Try your math again. Thats a 12.5 KHz spacing.

[RadioSouth]

It's a bit of an oddity. The GMRS simplex only channels are spaced 25 KHz apart from each other at 462.5625 then 462.5875.. 462.6125, etc. and follow the deviation width for a 25 KHz channel but are spaced 12.5 off the main GMRS channels. So I think it boils down to having a 25 KHz
wide channel in a slot where the bandplan normally calls for a 12.5 I don't know much about GMRS but it seems these simplex channels in between the repeater paired channels migh have been an afterthought.

[akardam]

I don't know much about GMRS but it seems these simplex channels in between the repeater paired channels migh have been an afterthought.

Not exactly. There are 8 primary 25khz spaced pairs in the GMRS service, 462.5500 to 462.7250, with repeater inputs on 467.5500 to 467.7250. There are 14 12.5khz spaced channels in between the primary pairs, 462.5625, 462.5875, etc. All 14 of these channels are available to the FRS service, within the FRS limits. The output side (462.x) are available to the GMRS service as simplex only channels. The 12.5khz spaced channels are supposed to be narrowband, and thus didn't exist before narrowband equipment was available.