T-Band Spectra Question

pctek_1957 · Post by **pctek_1957** » Sat Jul 29, 2006 11:14 am

Hi.

In your expert opinions, can I get a T-Band Spectra to tx/rx in the GMRS freq spread ? I dont have room to mount two radios.

Thanks

Will · Post by **Will** » Sat Jul 29, 2006 8:45 pm

The Spectra comes in two different 'splits' that will cover GMRS, 438 to 470, and the 450 to 482.

What is "your" definition of T band? T band covers 470 to 520, but usally only one portion of that is alocated in a given area.

Of course LA has to be different, 470 to 476, 480 to 486 and 500 to 512 are T band here.

T is short for television.

chartofmaryland · Post by **chartofmaryland** » Sun Jul 30, 2006 6:21 am

Being the user of one at one time, the lowest I could get my T-band T84 spectra was, 479.400 before the synth. out of lock FAIL 001 code. I found the band split of 482-512 was pretty restricted.

60hzEE · Post by **60hzEE** » Sun Jul 30, 2006 1:43 pm

A trick I used on a 450-470MHz UHF spectra to get its VCO to lock below 442 was to carefully tack solder a little more length on the stripline exposed in the window.

I took a 1/16W film resistor and tack soldered the end of its lead on the end of the stripline. Then, I bent it back, making a small loop that just extends slightly past the end of the stripline. Then, I cut off the extra wire. This allows locking for another couple of MHz.

You didn't mention how far below 470 that your T band would lock, and not get the typical 'fail 001' response. Anyway, the 'lead trick' should be good for another 3 MHz or so.

You would probably have to change the band limits of the software somehow as well, if I'm not mistaken.

Lee
60HzEE

pctek_1957 · Post by **pctek_1957** » Sun Jul 30, 2006 5:44 pm

Looks like I'll keep my 450-482 spectra in service. Thanks for the info

T-Band Spectra Question

T-Band Spectra Question

thanks