[chirp_users] offset precision
Hi,I've just set up CHIRP and downloaded the memory channel list from my Baofeng UV-5RV2+. I notice that the offsets on my saved channels are not exactly what I expected to see.
For the channels where I have set the offset to 000.600 in the radio, it's showing 0.601550 or 0.599890 in CHIRP. For the channels where I have set the offset to 005.000 in the radio, it's showing 5.001550 or 4.999890 in CHIRP. My question is, do I need to make any changes to these offset entries before writing the image back to the radio? Should I fix the entries to show the exact frequencies that I entered in the radio, or are the shifted frequencies correct? As a side note, I see that the default offset for channels that I have not set up are exactly 0.600000. I'm afraid to write an image back to the radio that could cause a problem so I thought it would be best to check first.
Thanks.Ed
On Sun, Feb 28, 2016 at 2:12 PM, Adk Lover via chirp_users chirp_users@intrepid.danplanet.com wrote:
Hi, I've just set up CHIRP and downloaded the memory channel list from my Baofeng UV-5RV2+.
I notice that the offsets on my saved channels are not exactly what I expected to see.
For the channels where I have set the offset to 000.600 in the radio, it's showing 0.601550 or 0.599890 in CHIRP.
For the channels where I have set the offset to 005.000 in the radio, it's showing 5.001550 or 4.999890 in CHIRP.
My question is, do I need to make any changes to these offset entries before writing the image back to the radio? Should I fix the entries to show the exact frequencies that I entered in the radio, or are the shifted frequencies correct?
As a side note, I see that the default offset for channels that I have not set up are exactly 0.600000.
I'm afraid to write an image back to the radio that could cause a problem so I thought it would be best to check first.
Thanks. Ed
CHIRP is showing you the frequency that has been manually programmed into the radio. This is a bug in the radio when programming manually.
These radios don't use offsets in memory channels and in some firmware versions the TX frequency is calculated incorrectly when using "reverse mode" to determine the TX frequency.
If you want the manually programmed TX frequency to be correct, then use to old method where you write the RX frequency to an empty channel, then enter the TX frequency into the VFO yourself and write it to the same channel.
If you correct this with CHIRP, then it will be correct in the radio.
Jim KC9HI
Your most likely set at 12.5 steps change it to 5 or 10 for ham use it will be wring if programmed like it is On Feb 28, 2016 1:15 PM, "Adk Lover via chirp_users" < chirp_users@intrepid.danplanet.com> wrote:
Hi, I've just set up CHIRP and downloaded the memory channel list from my Baofeng UV-5RV2+.
I notice that the offsets on my saved channels are not exactly what I expected to see.
For the channels where I have set the offset to 000.600 in the radio, it's showing 0.601550 or 0.599890 in CHIRP.
For the channels where I have set the offset to 005.000 in the radio, it's showing 5.001550 or 4.999890 in CHIRP.
My question is, do I need to make any changes to these offset entries before writing the image back to the radio? Should I fix the entries to show the exact frequencies that I entered in the radio, or are the shifted frequencies correct?
As a side note, I see that the default offset for channels that I have not set up are exactly 0.600000.
I'm afraid to write an image back to the radio that could cause a problem so I thought it would be best to check first.
Thanks. Ed
chirp_users mailing list chirp_users@intrepid.danplanet.com http://intrepid.danplanet.com/mailman/listinfo/chirp_users This message was sent to Robert Taylor at vawing@gmail.com To unsubscribe, send an email to chirp_users-unsubscribe@intrepid.danplanet.com
On Mon, Feb 29, 2016 at 1:47 PM, Robert Taylor vawing@gmail.com wrote:
Your most likely set at 12.5 steps change it to 5 or 10 for ham use it will be wring if programmed like it is
The STEP setting has nothing to do with it. In the latest firmware versions the STEP setting has no bearing on what frequency can be entered into the VFO. The only thing that the STEP setting does now is the set how much the VFO frequency changes when you press the [UP]/[DN] arrow keys while in the VFO.
This error is introduces when the user set menu 25 (SFT-D) and menu 26 (OFFSET) to the appropriate values for the repeater being programmed and then taps the [*] key to put the radio into 'reverse mode" so the TX frequency doesn't need to be keyed in manually. Unfortunately there is a bug in the calculation of the TX frequency and this is what caused the error in the frequency that gets programmed into the memory channel.
A simple workaround is to tap the [*] key to see the TX frequency, write it down (or remember it), then tap the [*] key to exit "reverse mode". Now key the TX frequency in manually.
Jim KC9HI
participants (3)
-
Adk Lover -
Jim Unroe -
Robert Taylor