[GE] rangr/delta questions

[Ray KV4K]

Randy,

As for the VCO locking on receive---

On this page:

http://www.packetradio.com/delta96.html

about:

MODIFYING THE GE DELTA SX for 9600 baud operation


There is a paragraph that says:


Now it becomes necessary to tune the DELTA as I described in last months
Packet Users Notebook. Be sure the LED adjacent to J303 goes out
in both transmit and receive. If the LED glows in either transmit or
receive, this indicates that VCO {quot}lock{quot} has not happened. To
lock the VCO in receive, it may be necessary to turn C220 in (CW) a few
turns until it goes out.


I had to do that myself on two I converted.  Hope this
applies/helps.


Ray KV4K

Port Orchard, WA




At 08:11 AM 2/21/2003 -0800, Randy Zelick wrote:

Hello...


I have been converting some rangrs and deltas to ham freqs with only


limited success. Below are some of the problems. It would be great to
hear 

if these are common, of if I just got unlucky. Of course, solutions are


most welcome....


1. 450 rangr with great sensitivity 450 MHz and up, dismal by 445
MHz.


2. Three separate VHF rangr units where TX works fine down to 140 MHz but


RX VCO won't lock below 152 MHz.... That's 152, not 142!


3. One VHF rangr where VCO lock light goes out on some receive
channels,

but squelch won't open and not clear if it hears signals. I have to

trouble-shoot this a bit more.


4. VHF Delta-S wideband TX works fine, RX VCO lock light won't go out


anywhere from 140 to 170 MHz.


5. VHF Delta-S narrow band. Had to pad the VCO chip caps both RX and TX
to 

make it lock below 143 MHz. This worked, but now low power out and slight


TX instability.


At least for the rangr rx, I may have trouble setting the range. I am


using the Niles software to make an eeprom image, then some freeware to


program the x2212 outside of the radio. 


Thanks,


=Randy=


 -- 
R.
Zelick                               email:
zelickr@pdx.edu

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