[chirp_users] Offset UV-5R
Why do I need a frequency in the offset cell even for a simplex channel? I was redoing my channel list yesterday
and noticed the radio would not transmit on a channel that was for simplex crossband use into my base radio. I had removed the frequency figuring that if it is simplex it doesn't need an offset entered since it is the same as the RX/TX entries. Well that's not
the case. It's no biggie. But I would like to understand the logic of needed the simplex frequency entered into the offset cell. Or maybe I'm doing something else wrong?
On 2013-10-29 05:30, Milton Hywatt wrote:
Why do I need a frequency in the offset cell even for a simplex channel? I was redoing my channel list yesterday and noticed the radio would not transmit on a channel that was for simplex crossband use into my base radio.
I would think the radio offers the facility and Chirp supports it so that you can mark channels to not be transmitted on. This lets you add frequencies for (in my area, ambulance svc, a couple police depts, FRS, GMRS, NOAA, etc) that I might want to monitor but wouldn't want to inadvertently key-up on.
Benton 29oct13 -- Benton Holzwarth benton@siletzbay.com
On Tue, Oct 29, 2013 at 5:30 AM, Milton Hywatt mhywattt@yahoo.com wrote:
Why do I need a frequency in the offset cell even for a simplex channel?
This is a question for your radio manufacturer, but I'll entertain it anyway...
I was redoing my channel list yesterday and noticed the radio would not transmit on a channel that was for simplex crossband use into my base radio. I had removed the frequency figuring that if it is simplex it doesn't need an offset entered since it is the same as the RX/TX entries. Well that's not the case. It's no biggie. But I would like to understand the logic of needed the simplex frequency entered into the offset cell. Or maybe I'm doing something else wrong?
The UV-5R uses 0 in the offset column to activate the TX inhibit feature. It's a clever way to save storage space in the radio. The two features are mutually exclusive: When you want TX inhibit, you don't need to store a TX frequency, so they used a 0 value in that column to activate the TX inhibit feature.
The Japanese ham radio manufacturers use two columns for TX frequency, duplex and offset. This is what Chirp's interface is modeled after. With these radios, you can put anything you want in the offset column when Duplex is set to None, because they don't overload usage of that column--offset is completely ignored in simplex mode.
To make things easier on everyone, Chirp has a feature to hide unused data columns. Select View -> Hide Unused Fields. Now the Offset field will be hidden (blank) in simplex mode, and you won't be tempted to fill it with zeros.
Tom KD7LXL
The offset won't be in use unless you set the Duplex + or -.
Brad NK8J
From: chirp_users-bounces@intrepid.danplanet.com [mailto:chirp_users-bounces@intrepid.danplanet.com] On Behalf Of Milton Hywatt Sent: Tuesday, October 29, 2013 5:30 AM To: chirp_users@intrepid.danplanet.com Subject: [chirp_users] Offset UV-5R
Why do I need a frequency in the offset cell even for a
simplex channel? I was redoing my channel list yesterday
and noticed the radio would not transmit on a channel that
was for simplex crossband use into my base radio. I had removed
the frequency figuring that if it is simplex it doesn't need an offset
entered since it is the same as the RX/TX entries. Well that's not
the case. It's no biggie. But I would like to understand the logic
of needed the simplex frequency entered into the offset cell. Or
maybe I'm doing something else wrong?
____________________________________________________________
participants (4)
-
Benton -
Brad NK8J -
Milton Hywatt -
Tom Hayward