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FT-847 use with transverter for 144 MHz from 28MHz

 

Hello all,
I'm trying to research the capabilities of the use of the FT-847 with a transverter, requiring the use of 10 meters. The issue may be the requirement for opening transmit to 32 MHz to get to the top of the 2 meter band.

For this transverter, 28 MHz = 144 MHz, and 32 MHz = 148 MHz.

I know that it's possible to modify the FT-847 to transmit above 30 MHz, but I've seen reference to the low pass filter being a possible issue.
Does anyone have experience with this, and are there any gotyas?

Thanks,
--
Cam, W4XXV
 

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You can easily change the FT847 to TX from 144 to 174 MHz,

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Also the use version goes from 144 to 148,

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73

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Andrew

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From: [email protected] [mailto:[email protected]] On Behalf Of Cam - W4XXV
Sent: 15 April 2024 18:05
To: [email protected]
Subject: [YaesuFT847] FT-847 use with transverter for 144 MHz from 28MHz

?

Hello all,
I'm trying to research the capabilities of the use of the FT-847 with a transverter, requiring the use of 10 meters. The issue may be the requirement for opening transmit to 32 MHz to get to the top of the 2 meter band.

For this transverter, 28 MHz = 144 MHz, and 32 MHz = 148 MHz.

I know that it's possible to modify the FT-847 to transmit above 30 MHz, but I've seen reference to the low pass filter being a possible issue.
Does anyone have experience with this, and are there any gotyas?

Thanks,
--
Cam, W4XXV
 

Cam, why do you want to use a transverter with the FT-847?? ?Is there something deficient?with the 2M mode of the Ft-847?? If so, seems like it would be far easier to address the problem than to go the transverter route.

73,

Tom K6EU



On Mon, Apr 15, 2024 at 10:57?AM Andrew Lenton via <a=[email protected]> wrote:

You can easily change the FT847 to TX from 144 to 174 MHz,

?

Also the use version goes from 144 to 148,

?

?

?

?

73

?

Andrew

?

?

?

From: [email protected] [mailto:[email protected]] On Behalf Of Cam - W4XXV
Sent: 15 April 2024 18:05
To: [email protected]
Subject: [YaesuFT847] FT-847 use with transverter for 144 MHz from 28MHz

?

Hello all,
I'm trying to research the capabilities of the use of the FT-847 with a transverter, requiring the use of 10 meters. The issue may be the requirement for opening transmit to 32 MHz to get to the top of the 2 meter band.

For this transverter, 28 MHz = 144 MHz, and 32 MHz = 148 MHz.

I know that it's possible to modify the FT-847 to transmit above 30 MHz, but I've seen reference to the low pass filter being a possible issue.
Does anyone have experience with this, and are there any gotyas?

Thanks,
--
Cam, W4XXV
 

I should have added? "and other transverters".

I also want to make use of 222 MHz as well, requiring the use of 28-31 MHz transmit.

So, the question still stands.
--
Cam, W4XXV
 

Was the plan to use 0db as the drive level, if so the lpf issue won't be a problem because your bypassing the PA


On Mon, Apr 15, 2024, 1:20?PM Cam - W4XXV via <cam=[email protected]> wrote:

I should have added? "and other transverters".

I also want to make use of 222 MHz as well, requiring the use of 28-31 MHz transmit.

So, the question still stands.
--
Cam, W4XXV
 

At this point, the transmit level needs to be 5 Watts (+37 dBm) for driving my current transverter(s).

So, just using the normal output, not any taps internal to the rig.

--
Cam, W4XXV

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