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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TenTec\]\s+MFJ\s+Filter\s+to\s+work\s+on\s+TT540\s*$/: 5 ]

Total 5 documents matching your query.

1. [TenTec] MFJ Filter to work on TT540 (score: 1)
Author: Marty Hartwell <mhartwe@gmail.com>
Date: Fri, 3 Sep 2010 13:25:24 -0500
Hi Anyone think this filter from MFJ will work in the TT540 Triton IV as a CW/SSB filter? Looks like a two pole but not sure if it will work in place of the 245 filter made for the 540 and no longer
/archives//html/TenTec/2010-09/msg00039.html (6,961 bytes)

2. Re: [TenTec] MFJ Filter to work on TT540 (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Fri, 03 Sep 2010 14:40:14 -0500
Its good only for CW, won't pass SSB. The MFJ input impedance is much lower, can't be sure about the output impedance but that's probably not nearly the problem that loading a circuit expecting 220k
/archives//html/TenTec/2010-09/msg00042.html (7,669 bytes)

3. Re: [TenTec] MFJ Filter to work on TT540 (score: 1)
Author: "Hulett, Russell" <rhulett1@consolidated.net>
Date: Fri, 3 Sep 2010 16:53:30 -0400 (EDT)
Well, the connections used by the TT245 in the TT540 aren't like the header shown in the MFJ info. The 245 has 7 vector pins spaced about 1/4 inch apart. FWIW, I built a clone of the TT245 for my 544
/archives//html/TenTec/2010-09/msg00044.html (7,652 bytes)

4. Re: [TenTec] MFJ Filter to work on TT540 (score: 1)
Author: "Rick - NJ0IP / DJ0IP" <Rick@DJ0IP.de>
Date: Fri, 3 Sep 2010 16:08:29 -0500
Yes Marty, this filter will work fine, electrically. You will have to modify the switching; you won't want to use the push-button switch. Should be easy. 73 Rick Hi Anyone think this filter from MFJ
/archives//html/TenTec/2010-09/msg00046.html (8,582 bytes)

5. Re: [TenTec] MFJ Filter to work on TT540 (score: 1)
Author: "Mike Hyder -N4NT-" <Mike_N4NT@charter.net>
Date: Sat, 4 Sep 2010 10:04:28 -0400
I believe you are mistaken about using an audio filter external to the rig. The 540 and 544 derive their AGC voltage from audio. If the filter is not in the circuit before the AGC sampling point, the
/archives//html/TenTec/2010-09/msg00057.html (8,699 bytes)


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