# Re: Polyphase Filer examples and Busport Implementation for QT GUI Frequency Sink

**URL:** <https://www.ruby-forum.com/t/re-polyphase-filer-examples-and-busport-implementation-for-qt-gui-frequency-sink/234158>\
**Category:** GNU Radio\
**Created:** [February 11, 2015, 1:41pm UTC](https://www.ruby-forum.com/t/re-polyphase-filer-examples-and-busport-implementation-for-qt-gui-frequency-sink/234158 "2015-02-11T13:41:13Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\
**Post date:** [February 11, 2015, 1:41pm UTC](https://www.ruby-forum.com/t/re-polyphase-filer-examples-and-busport-implementation-for-qt-gui-frequency-sink/234158/1 "2015-02-11T13:41:13Z")

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Thanks for the input.

So given that the QT GUI Frequency Sync Block seems to have no entry in  
the  
Properties GUI to set BusPort Connections, how would one go about doing  
that. It seems to default to a minimum bus width of #2 for number of  
inputs 1 or 0 and number of inputs +1 for higher numbers.

Its not clear how this can match up with something that has a bus width  
of  
1.

Is this something that could be edited in the .xml file if one knew the  
proper keys or is this something that one needs to refer to the code  
itself  
for and if so would that be the code for the block or the code that  
implements the busports.

Any insight is welcomed.

LVDJ