From thunder.mcrcim.mcgill.edu!bonnie.concordia.ca!ccu.umanitoba.ca!herald.usask.ca!alberta!aunro!ukma!wupost!zaphod.mps.ohio-state.edu!rpi!yoony Thu Oct 3 02:17:16 EDT 1991
>"I modified my FT470 for extended rx on 70 cm (430 - 500 MHz)
>by removing one of the SMD resistors. What I discovered was that I could
>also tune from 800 to 950 MHz. I haven't yet received anything from this
>band. You can tune there simply by entering the frequency from the
>keyboard."
>"Does this rig receive on this frequency range?"
>"73 de Wes"
>No I'm afraid not. From my experience, the 470 on the 70 cm band, the
>receiver's reasonable sensitivity is from approximately 300 Mhz to about 510
>Mhz (That's the range that i can pick-up public service communications). You
>can tune the the VFO from 0 Mhz to approximately 1.2 Ghz, it's just that the
>receiver's front-end isn't very sensitive at all too far from it's original
>design band.
>P.S. My 2 meter range is set from 108.025 to 204.295 Mhz...
> 73 De Gogian Yee, KC6VKZ : )
>mail address: Gogian Yee:ES GSD/WCO:Xerox
>Disclaimer: Everything I said is of my own opinion. Not my employer's. : )
Just as an added information. The Japanese local sale version of the FT470
called FT-728 is fully capable of receiving from 800-950Mhz. So far I've
had a number of different radios(HT's ) and the only difference between
Japanese local and export versions are cosmetic and a jumper or a diode that
determines whether it's a local or export version( This is normally done on the
control side of the rig, and the RF side is identical ). I have a feeling
that the mod that was done is different from the one that I have. The one
that I have describes a number of jumpers that has to made rather then
removing a surface mount resistor.
73..de N6ZUD/2 Young-hoon Yoon.
From thunder.mcrcim.mcgill.edu!snorkelwacker.mit.edu!apple!olivea!samsung!zaphod.mps.ohio-state.edu!cis.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!pacbell.com!ucsd!news-mail-gateway Sun Sep 29 20:51:35 EDT 1991
Hi Steve,
I hope you got this letter from me, because this is the first time i had to
reply to somebody and I'm still "New" on using this 6085, but anyways to the
objective...
I used the Instructions on the "YAESU FT-470 Expanded Receive 430-500 MHz"
that I picked-up at the local Ham Radio Outlet (You should be able to ask for
the Mod. Sheet by asking for it at your local Ham Shop) when I purchased my
Yaesu FT-470. It'll be better for you to do that than for me to put the whole
thing all over again "on the air", because that Mod. has been floating around
on this system for awhiles, earlier. But anyways, i noticed that after I
performed this Keyboard Entry Mod., I was able to enter on the Lower limit
channel (in Memory Tune (MT) mode and Lower limit channel already set to
108.025 Mhz), 140 Mhz. I did that by entering "40000"and it accepted the entry.
I set the Standard Frequency Offset to 60 Khz and left the Repeater Offset to
none or + and it TRANSMITTED. You can't use the - shift because it won't allow
you to go below 140 Mhz. Well, after i discovered this new LOWER TX Limit, I
tried this procedure again, but on the Upper Limit and found that I can enter
up to 155 Mhz, and found I can TRANSMIT up to that New frequency Limit. It's
just like programming in another frequency on 2 Meters, but one thing though...
I was curious about anther person's mention of "Extended Receive" capability
by "HT OFF - HOLD up and down keys - turn on mod for extended receive.."- I
tried it last evening and it RESET ALL MY MEMORIES AND NOW DOESN'T ALLOW me to
perform the EXTENDED TRANSMIT capabilities ANYMORE. I was able to reprogram my
470 for the EXTENDED RECEIVE using another method, but that was it. If you had
tried this "Mod." already, then I don't believe the "Extended Tx. will work for
you either now. I'm still working on trying to get my 470 RESTORED back to
original operation, but I'm not holding my breath...
