Go Back   WorldwideDX Amateur Radio Forums > Amateur Radio Related > HF Bands and HF Rigs


Amateur Callsign Lookup
Enter Callsign:

TCXO Filter

Like Tree2Likes

Reply
 
LinkBack Thread Tools Display Modes
  #9  
Old 04-11-2012, 05:32 AM
Crotchety Old Bastard
iTrader: (0)
 
Join Date: Apr 2005
Location: Oklahoma
Posts: 6,915
W5LZ is on a distinguished road
Default


To this point I haven't needed a narrower filter for the TS-480. From past experience, I wouldn't buy the Kenwood filters, but would go with the INRAD filters instead, world of difference. I also wouldn't use a filter as narrow as that 1.8 one. I've found that cascading two 2.1 filters sounds much better to me, less distortion. That's a 'personal' thingy, so listen to that 1.8 before getting one.
I also have found that I don't need a TCXO for the '480 ... yet. I wouldn't mind having that option, but haven't needed it so far.
The one option I'd really like to have (don't sell them in the USA) is the doo-kicky for combining the radio and control head. Of course, if I really had to have one I'd just make the silly thing. Oh well.
- 'Doc

Reply With Quote
  #10  
Old 04-11-2012, 05:32 AM
North Florida
iTrader: (0)
 
Join Date: Feb 2012
Location: Near Gainesville, Florida
Posts: 196
WA8ZYT is on a distinguished road
Default

I have found my 480 to be quite stable. Thanks for the link, ordered the 1.8 Khz filter for mine, a little cheaper than AES, plus no sales tax!

Reply With Quote
  #11  
Old 04-11-2012, 08:06 AM
Se7en's Avatar
W9WDX Amateur Radio Club Member
iTrader: (3)
 
Join Date: Jun 2010
Location: Ca
Posts: 4,709
Se7en is on a distinguished road
Default

Thanks for all the reply's.

I have no idea how filters work...im just learning how to use the filtering on my ic-7000...o_O

Sent from my DROIDX using Tapatalk 2
__________________

Reply With Quote
  #12  
Old 04-11-2012, 09:26 AM
W9WDX Amateur Radio Club Member
iTrader: (0)
 
Join Date: Jul 2008
Posts: 61
928bolo is on a distinguished road
Default

Quote:
Originally Posted by W5LZ View Post
To this point I haven't needed a narrower filter for the TS-480. From past experience, I wouldn't buy the Kenwood filters, but would go with the INRAD filters instead, world of difference. I also wouldn't use a filter as narrow as that 1.8 one. I've found that cascading two 2.1 filters sounds much better to me, less distortion. That's a 'personal' thingy, so listen to that 1.8 before getting one.
I also have found that I don't need a TCXO for the '480 ... yet. I wouldn't mind having that option, but haven't needed it so far.
The one option I'd really like to have (don't sell them in the USA) is the doo-kicky for combining the radio and control head. Of course, if I really had to have one I'd just make the silly thing. Oh well.
- 'Doc

I wish Inrad filters fit the 480 but they don't.

Reply With Quote
  #13  
Old 04-11-2012, 12:40 PM
Senior Member
iTrader: (0)
 
Join Date: Nov 2010
Posts: 133
unit248 is on a distinguished road
Default

I have the older Kenwood SO-2 TXCO option for my TS-850SAT and TS-950SDX. At least with the TS-850SAT, there was a noticeable improvement in frequency stability when I installed it. (The TS-950SDX comes with it built in and I've never tried disabling it, so I don't know how much difference it makes there.)

The extra stability is useful for certain digital modes, where it's important that you not drift in order to maintain a lock on the signal you're receiving so that you can continue to demodulate it successfully. I also prefer it for SSB since even a small amount of drift will be noticed there -- of course you can still understand what the other guy is saying but it can be annoying.

Sadly, Kenwood changed both the IF conversion scheme and the master oscillator frequencies in their newer radios so the new filters and TXCO won't work in the older rigs. And the older ones are scarce.

-Bill

Reply With Quote
  #14  
Old 04-11-2012, 01:33 PM
m42duster's Avatar
Senior Member
iTrader: (18)
 
Join Date: Jun 2009
Location: Southeast Ohio
Posts: 7,142
m42duster is on a distinguished road
Default

Sure are scarce.

I pick them up when I see them at the fests. I have a decent collection.
Se7en likes this.

Reply With Quote
  #15  
Old 04-11-2012, 01:37 PM
TonyV225's Avatar
W9WDX Amateur Radio Club Member
iTrader: (8)
 
Join Date: Apr 2005
Location: Wisconsin
Posts: 5,720
TonyV225 is on a distinguished road
Default

The TCXO are nice if your running a mobile, It helps with keeping the radio stable when there are climate / temperature changes. I have them and can tell you that most radios used as a base will not need them although some of the older rigs may have a tendency to drift a bit more
Se7en likes this.
__________________
""""was not thinking of a cber sat with his makita screwdriver winding round the presets untill his meter said s9+60db from a guy on a handheld 15 miles away""""

Reply With Quote
  #16  
Old 04-18-2012, 03:29 AM
North Florida
iTrader: (0)
 
Join Date: Feb 2012
Location: Near Gainesville, Florida
Posts: 196
WA8ZYT is on a distinguished road
Default

My Kenwood 1.8 Khz filter arrived last night and I got it installed. Just used it for a little bit on a ragchew up on 6 meters last night. It does make a difference in digging out weak signals. Have not tried it on the low bands, yet.

As far as it not sounding good, there is a difference in fidelity, but I did not find it objectionable at all. Kicking myself for not ordering the 270 hz filter at the same time.

In regards to Inrad not making filters for the 480, I read somewhere that the felt they could not improve on the Kenwood filters, so they decided not to make them for that particular radio.

Reply With Quote
Reply

Bookmarks
Worldwide Radio Forum



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Building a simple Alternator whine / ignition filter Moleculo Home Brew 60 05-21-2014 02:17 PM
Elecraft K3 Review Moleculo Product Reviews 61 05-08-2012 03:51 PM
Circuit Improvements for the TS-440S AudioShockwav Kenwood 0 08-17-2011 11:34 AM
sweeping an unknown filter video Anritzu Site Master bushwacker General Ham Radio Discussion 5 12-25-2009 06:49 PM
Low Pass Filter Article Master Chief Meters, Mics & Other Accessories 1 04-15-2007 04:42 PM


All times are GMT -7. The time now is 02:51 AM.


Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0
Worldwide Radio Forum