[600MRG] Flex-5000A or Flex-1500

[Edward R Cole]

Lee,

Interesting that both the flex 1500 and 5000 will work down 
there.  We were hoping that the new KX3 would but now it has been 
stated it will not.  The K3 stops at 490 KHz, unfortunately.

So I will build a special transverter to run from 10.470 to 0.470 
MHz.  This allows me to use my station OCXO 10-MHz standard as the 
LO.  Using the K3 with < 1-Hz error at 10-MHz will make an 
exceptionally stable 630m rig.  Mixing will all be a mw level and 
then amplified either by my NDB 100w transmitter or by adding a 25w 
MosFet PA stage.  I will also look at using a 3.1 MHz LO for 80m 
transceivers to translate down from 3570 KHz.  If there is interest, 
I may try selling them perhaps as a partial kit.
http://www.kl7uw.com/kits.htm

I have my six-band HF LP filter board from PCBExpress and it came out 
nice.  I will be installing the components and testing the next 
couple weeks.  This is for my 300w HF amp (kit sold by CCI).

So next will be designing up the 630m transverter pc board once I 
have settled on circuitry.  I would love to have a prototype to show 
off at Dayton (we will see?).

73, Ed
PS: repaired inverted-L so I can begin testing and receiving, 
again.  May set up for WSPR receive-only until I am sure of match at antenna.

At 07:38 PM 1/21/2013, Lee Mushel wrote:


>It was unfortunate for me that the Flex5000A (now fully "upgraded") 
>was the first radio I used for initial experiments on 600 meters.
>
>After some extended discussion with Flex and additional testing with 
>Rob Sherwood it was concluded that the 5000A would not be a first 
>choice for such work.     I am leaving out a lot of details and 
>covering about a year of time in the previous sentence.   Of course, 
>there is no reason why "up-converting" can't be used and several 
>routes can be followed to do that. Those who still prefer "knob and 
>button" radios over those whose operator interface is a video 
>display might find my preference a bit strange.   If you would like 
>a photo that will illustrate my thinking  about software defined 
>radio you can ask off the reflector.  And at the moment I am 
>modifying a BC453-B to provide SDR performance.
>
>I have only recently acquired the Flex 1500 but at present I have 
>some reason to believe that it will be quite suitable for use on the 
>lower frequencies of the new band.   My own experimentation on this 
>continues.....
>
>I must add that I absolutely marvel at the general capabilities of 
>the 5000A and it is, without question, the "premier rig" at K9WRU!
>
>
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