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Author Topic: Adjusting Shift - Width - Notch - AGC - ATT - IPO  (Read 2032 times)
AK4FK
Member

Posts: 18




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« on: March 12, 2010, 09:54:02 AM »

I'm looking for a good web site or book that explains the adjustments of all the filter setttings on the new rigs. For example:
"The sophisticated receiver section utilizes DSP filtering, incorporating features such as Variable Bandwidth, IF Shift, and Passband Contour tuning. Digital Noise Reduction and Digital Auto-Notch Filtering are also provided, along with a manually-tuned IF Notch filter."

Besides trial and error and taking the time to see what effect each setting does is there a good web site or book that sort of explains it all.
I just bought AC6V's book DX101x HF + 6M DXing. I liked it a lot and learned a lot but what I'm looking for is some kind of explanation of each filter and the different settings.
Also maybe some info on setting up for split mode? I understand what it is. Rec and Trx on different VFO's and frequency but how higher or lower do I Trx than Rec. Wow I have a lot to learn. But love it.

Thanks,

Walter
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W5ESE
Member

Posts: 550


WWW

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« Reply #1 on: March 12, 2010, 03:49:40 PM »

QST has had a series of excellent articles on just the topics you mention. The articles were written
by Joel Hallas, the Technical Editor. If you are an ARRL member, you can access them through the
online ARRL periodical archive.

Jun 2006 QST   59   Receiver Gain Control (Getting to Know Your Radio)
Article: QST Archive [PDF]
Report a problem with this entry   Hallas, Joel R., W1ZR

Oct 2006 QST   65   Fighting Interference and Noise with Filters
(Getting to Know Your Radio)
Article: QST Archive [PDF]
Report a problem with this entry   Hallas, Joel R., W1ZR

Dec 2006 QST   51   Automatic Level Control
(Getting to Know Your Radio)
Article: QST Archive [PDF]
Report a problem with this entry   Hallas, Joel R., W1ZR

Apr 2005 QST   56   Passband Tuning
(Getting to Know Your Radio)
Article: QST Archive [PDF]
Report a problem with this entry   Hallas, Joel R., W1ZR

Jun 2005 QST   57   Speech Compression
(Getting to Know Your Radio)
Article: QST Archive [PDF]
Report a problem with this entry   Hallas, Joel R., W1ZR

Aug 2005 QST   46   VHF Squelch Modes
(Getting to Know Your Radio)
Article: QST Archive [PDF]
Report a problem with this entry   Hallas, Joel R., W1ZR

Oct 2005 QST   60   RIT-XIT-VFO A/B--What Frequency Am I On Now?
(Getting to Know Your Radio)
Article: QST Archive [PDF]
Report a problem with this entry   Hallas, Joel R., W1ZR

Dec 2005 QST   56   Noise Limiters, Noise Blankers and Digital Signal Processing
(Getting to Know Your Radio)
Article: QST Archive [PDF]
Report a problem with this entry   Hallas, Joel R., W1ZR

73
Scott W5ESE
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WS4E
Member

Posts: 233




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« Reply #2 on: March 12, 2010, 09:45:47 PM »

I will do you one better.

Here is a search that will find all of Joel's "getting to know your radio" articles from QST.

http://www.arrl.org/members-only/qqnsearch.html?search=1&words=Getting+to+Know+Your+Radio&name=Hallas%2C+Joe&call=&year=&month=&selpub[]=QST
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KF6QEX
Member

Posts: 608




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« Reply #3 on: March 12, 2010, 10:15:43 PM »

This post is for mind readers only.
You know...nahhh...forget it , I am not going to say it....

Smiley
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WX7G
Member

Posts: 6204




Ignore
« Reply #4 on: March 13, 2010, 07:10:54 AM »

Fire up the radio and play with it. The PREAMP, IPO, ATTEN depend on the particular radio.

I work CW only. I almost never use IF shift or notching. I do use DSP noise reduction all the time and run IF bandwidth from 100 to 400 Hz.

For CW DX stations often ask for calls 1 or more kHz UP from his TX frequency.

PRE AMP, IPO, and ATTEN? It depends on the radio and the conditions. Some receivers get crunched during contests with the PRE AMP ON. Some (Elecraft K3) do not. When in doubt turn OFF the pre amp and kick in some attenuation.
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AA4PB
Member

Posts: 12983




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« Reply #5 on: March 13, 2010, 07:44:11 AM »

Read all you can and then experiment with your own radio.
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AK4FK
Member

Posts: 18




Ignore
« Reply #6 on: March 14, 2010, 07:51:24 AM »

W5ESE & WS4E,
Thanks for those suggestions/links. It sounds like that's just what I'm looking for. I just picked up a FT-950 & would like to use it's full potential.  I realized last night I can always do a menu reset so I started adjusting and was able to get rid of a lot of static noise while bringing in both sides of the conversation.  Once again thanks for those links.

Walter | KI4UCJ
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