Re: [Flexradio] Flex 1500 VLF transnit converter problems

[Andrew Russell]

Thanks Tim,
VFO A is unlocked if I use the XVTX\COM port for Tx. VFO B is restricted to the 
ham bands on the same port. 2200M is now available to all VK advanced calls at 
1W ERP. 
The transverter form doesn't seem to work without an Rx converter. I made one 
called "137" with 4MHz LO. Band 135-138KHz. Rx is on 4.137 but no Tx output.
I could use a low side IF but that reverses side bands etc and makes me dizzy.
Or I could change to a 10MHz LO but frequency accuracy is harder. (Unless I use 
my 10MHz TCXO from another project).
Its bad luck that the F1500 has no usefull output on XVTX\COM at 137KHz. It 
cuts out below about 495KHz. 
Andrew
 

 

> Date: Sun, 28 Aug 2011 15:00:51 -0400
> From: t...@flex-radio.com
> To: flexradio@flex-radio.biz
> Subject: Re: [Flexradio] Flex 1500 VLF transnit converter problems
> 
> Andrew,
> 
> For the TX to be unlocked on the transverter ports and to transmit, you 
> have to be operating in transverter mode using the transverter form to 
> define the band of operation. I don't think it will work as you have 
> described. I'll need to talk with the development team on Monday to be 
> certain.
> 
> -Tim
> Tim Ellison, W4TME
> Product Management, Sales & Support
> FlexRadio Systems^(TM)
> 4616 W Howard Ln Ste 1-150
> Austin, TX 78728
> Phone: 512-535-4713 Ext. 223
> Email: t...@flexradio.com <mailto:t...@flexradio.com>
> Web: www.flexradio.com <http://www.flexradio.com>
> 
> logo
> /Tune In Excitement^(TM)
> PowerSDR^(TM) is a trademark of FlexRadio Systems/
> 
> 
> On 8/28/2011 9:35 AM, Andrew Russell wrote:
> >
> >
> >
> > Hello all.I have just built a transmit (only) converter for 137kHz with a 
> > 4MHz LO. I am receiving on VFO A on PA or XVRX at 137KHz with a band pass 
> > filter and trying to transmit on VFO B at 4.137MHz on XVTX/COM into the 
> > transverter. The TX and RX antennas are not the same.It will not transmit 
> > on the VFO B frequency on the transverter port. "Out of Band"It will work 
> > for VFO A on 4.137MHz on the XVTX/COM port with PTT and with the tune 
> > button.I tried setting up a transverter button with 4MHz LO but although 
> > PSDR displays the correct frequency there is no output at 4.137 on the 
> > XVTX/COM port when I key the transmitter.Is there something in the manual I 
> > am missing? Andrew(PSDR 2.2.2, W7, 32) 
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Re: [Flexradio] Flex 1500 VLF transnit converter problems

[Tim Ellison, W4TME]

Andrew,

For the TX to be unlocked on the transverter ports and to transmit, you 
have to be operating in transverter mode using the transverter form to 
define the band of operation.  I don't think it will work as you have 
described.  I'll need to talk with the development team on Monday to be 
certain.


-Tim
Tim Ellison, W4TME
Product Management, Sales & Support
FlexRadio Systems^(TM)
4616 W Howard Ln Ste 1-150
Austin, TX 78728
Phone: 512-535-4713 Ext. 223
Email: t...@flexradio.com 
Web: www.flexradio.com 

logo
/Tune In Excitement^(TM)
PowerSDR^(TM) is a trademark of FlexRadio Systems/


On 8/28/2011 9:35 AM, Andrew Russell wrote:




Hello all.I have just built a transmit (only) converter for 137kHz with a 4MHz LO. I am 
receiving on VFO A on PA or XVRX at 137KHz with a band pass filter and trying to transmit 
on VFO B at 4.137MHz on XVTX/COM into the transverter. The TX and RX antennas are not the 
same.It will not transmit on the VFO B frequency on the transverter port. "Out of 
Band"It will work for VFO A on 4.137MHz on the XVTX/COM port with PTT and with the 
tune button.I tried setting up a transverter button with 4MHz LO but although PSDR 
displays the correct frequency there is no output at 4.137 on the XVTX/COM port when I 
key the transmitter.Is there something in the manual I am missing? Andrew(PSDR 2.2.2, W7, 
32)  
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