[Icom] Need Help with IC-451A

Sat, 8 Mar 2003 10:03:19 -0700

Thanks Dave,
	Yep, I'll take you up on the manual copy.  Either via E-mail (I have high
speed access) or snail mail at the address below.  Looking forward to
getting both rigs up an on the air.  I want to work AO-10 before it Dies all
together.  Boy, do we need another one like that one.
Mike Baker
8845 W. Diana Ave.
Peoria, AZ. 85345

Once again, thanks for your help...
Best 73

Mike Baker  K7DD
[email protected]

-----Original Message-----
From: [email protected] [mailto:[email protected]]On
Behalf Of daveg
Sent: Saturday, March 08, 2003 9:54 AM
To: [email protected]
Subject: Re: [Icom] Need Help with IC-451A

Mike -

I just turned my 251 on to refresh my memory.  The receive light only
stays on only when the squelch is open plus the squelch works in SSB
mode also.  Try turning the squelch all the way counter-clockwise and
see if there is some sign of life there.

It's a good performing old radio.  It doesn't have all the bells and
whistles of the new all-mode rigs, but I always get good audio reports
on SSB with the stock hand mic.  The VOX and noise blanker work very
well.  It automatically gives you the 600 KHz offset for 2-meter
repeaters (after reading the instructions a few times and setting it up
right, that is).  There doesn't seem to be a provision for a CCTSS tone
encoder.  You could probably connect an out-board tone generator via
that accessory jack.   Just remember to drop the mic gain on FM, or it
sounds really bad.

Best of all, the prices of these old gems don't get all inflated on ebay
like the rigs with 200+ memories and colorized displays!

If you need a copy of the 251A manual, let me know.

73's
Dave, N2EPV

Mike Baker K7DD wrote:

>Hello Dave,
>	Thanks for the input.
>	I did take a closer look and figured out that the end pins are the DC
>connect. The > end is + and the other end of the connector is - but I was
>beginning to think the two pins in the middle (pins 2 & 3 ref your drawing)
>were jumpered together for AC.  Is this NOT the case and instead pins 1 + 2
>are jumpered (ref. your diagram)???
>	When I got it going on DC there is no rush sound on FM and the Receive
>light doesn't stay lit so I think there is more not right with this radio.
>Too bad.  I really don't need the work. ;>(  I also didn't realize it only
>works from 430 to 440 and not above 440 or below 430.  OK for satellite
work
>but I was hoping to use it for more. Sort of makes FM a Moot mode.  I have
a
>251A on the way that was advertised as fully functional/not DOA so I hope I
>have better luck with that one. BTW, does your 251A have a factory
>tone/ctcss board in it and if so, what is the model # ??? I will assume the
>one I have coming doesn't so I just want to know so I can keep my eyes open
>for one.  I see I need to get a replacement bail for the bottom of the rig
>as the original is missing.
>	Looking forward to your reply,
>Best 73
>
>Mike Baker  K7DD
>[email protected]
>
>
>

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