# CAT dropping issues with Yaesu FT-450D
**URL:** https://forum.digirig.net/t/cat-dropping-issues-with-yaesu-ft-450d/5047
**Category:** Uncategorized
**Tags:** yaesu-ft-450d
**Created:** [December 30, 2024, 8:14pm UTC](https://forum.digirig.net/t/cat-dropping-issues-with-yaesu-ft-450d/5047 "2024-12-30T20:14:25Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@N4VGW](https://forum.digirig.net/u/N4VGW)
#### Post date: [December 30, 2024, 8:14pm UTC](https://forum.digirig.net/t/cat-dropping-issues-with-yaesu-ft-450d/5047/1 "2024-12-30T20:14:25Z")
I have been using a Yaesu a FT-450D with the newer cables with zero issues for about a year now primarily with WSJT-X -I purchased Ham Radio Deluxe earlier this year and for the most part it works great EXCEPT for when I go to use the Frequency sliders (like sliding from 14.150 to 14.200) causes the CAT control to drop. I have to power cycle the Radio or pull the USB to regain control. Again WSJT-X works great and I’ve never had a drop issue with that-
For Christmas/Birthday earlier this month I got a Yaesu FT-DX10 and it works with those sliders fine - I had a chance over the holidays to add an RX out/IF out to the 450D which works like a treat with SDR PLAY --CAT works fine Except For when I slide the curser to change frequency in the waterfall the CAT drops - so an abrupt change in Frequency seems to make the CAT connection drop - I have checked the settings and everything looks fine-
Can anyone point me to the right direction in where to begin troubleshooting?
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### Author:  [@webmonkey](https://forum.digirig.net/u/webmonkey)
#### Post date: [December 31, 2024, 12:41am UTC](https://forum.digirig.net/t/cat-dropping-issues-with-yaesu-ft-450d/5047/2 "2024-12-31T00:41:45Z")
HRD
radio options
options
on my ic-736:
read timeout is 500ms (the default)
polling is 300ms (the default)
you could try adjusting these numbers until you get a stable connection.
read timeout is how long does the software wait for a response from the radio before trying again/giving up (i don’t know which one hrd does)
polling interval is how often/quickly does the software ask the radio ‘how you doin’ ?’
🙂
good luck
kb0wlf