[Milsurplus] Multiple Front End receiver

Fri Aug 27 09:26:08 EDT 2010

I am not aware of any Nems-Clarke / DEI / Vitro / ACL / W-J telemetry
receivers with IF BW > 10 MHz.

-John

=============

>
> Mike,
>
> ARC TV-10 /CV whatever it is:  beyond being less than optimal as far as
> sensitivity, it does not cover the whole band.
>
> I checked local craigslist for the PRO-200(4,5,6) series and there is one
> for only $50.00 so they would seem to fall within your budget.
>
> The kayak ride from the mainland would might stretch delivery times,
> though.
> I know that the 2005 and 2006 will definitely cover 225 to 400 MHz band.
> Also the old Regency MX-5000 covers both V/U ac bands.  The Regency should
> be even cheaper since it tops out at 512 MHz.
>
> (MIL Radio Content follows)
> A technically feasible but, perhaps,  less practical approach to the UHF
> problem might be to use an old Nems-Clarke telemetry receiver that covers
> a
> portion of the UHF band and feed the IF output to a batch of MIL Short
> Wave
> receivers.  Send pictures (prior to building collapse) if you choose this
> approach.
>
> 73
>
> Tom
> WB3AKD
>
>
>
>
> ----- Original Message -----
> From: "Kludge" <wh7hg.hi at gmail.com>
> To: <milsurplus at mailman.qth.net>
> Sent: Thursday, August 26, 2010 7:39 PM
> Subject: Re: [Milsurplus] Multiple Front End receiver
>
>
> -----Original Message-----
> From: Tom Dawson [mailto:wb3akd at earthlink.net]
>> Sounds like you want to listen to multiple channels simultaneously so
>> the
>> single IF idea won't work as there is more chance of you successfully
>> performing brain surgery than all those planes being within 20 Hz or so
>> of
>
>> the channel frequency (assuming your multiple LOs were sufficiently
>> accurate) so it would definitely be heterodyne city.
>
> Yeah, so I've heard.  :-)
>
> Bill, KU8H, allowed as how a single LO with multiple IF et al chains all
> tied to a single audio stage could be a better approach.   Where a problem
> comes in with this is in the frequency spread.  The frequencies of
> interest
> (as requested by someone else) are as follows (all in MCs):
>
> HNL approach/departure  118.3  269.0
> HNL clearance delivery  121.4  281.4
> HJR tower  132.6  340.2
> HJR ground  123.8  336.4
> HJR clearance delivery  121.7  380.5
>
> I know there are five pairs rather than four.  I don't know if I'll be
> able
> to hear HNL's clearance delivery although I may be able to hear the read
> back.  I know I'll hear read back to HJR's clearance delivery and should
> hear both sides dependent on the transmitter antenna site.  (That may also
> come out of HNL.)
>
> If I choose a LO frequency wisely for each [sub-]band (or get lucky with
> the
> crystals I have on hand which is more likely), I should be able to use HF
> coil sets for the IF transformers also several different frequencies will
> be
> needed to achieve that.
>
>> Something like the ARC Receivers for VHF then another batch of ARC
> Receivers
>> stack with a TV-10 converter or something similar for UHF.
>
> Using R-13s and/or R-34s has the advantage that I can rack them in
> slightly
> altered 2 or 3 Rx command set racks (Pre-hacked ones would be good for
> this.) then tune them as needed.  Once tuned, they can be disconnected
> from
> a normal control head and routed to a fairly conventional aircraft audio
> panel for mixing et al.
>
>> A Stack of PRO-2005/PRO-2006 scanners would fit the bill with no
>> converter
> , if you can
>> find some to fit your budget.
>
> Will these cover the UHF aircraft band as well?  With the amount of local
> and "just passing through" military traffic, that is almost a necessity.
> (Because of that traffic, I might add Kaneohe MCAS (HNG)
> approach/departure
> at 125.0 & 263.5 MCs even though it's on the other end of the island.)  If
> they do, I may do a split - A.R.C. for VHF and scanners for UHF. - if I
> can
> find the space.
>
>> (Non-sequitur: Let Google maps find directions between Honolulu and my
> QTH.
>> Directions included "Kayak across the pacific ocean-2756 Miles to WA.")
>
> So *that* is how UPS & FedEx get ground shipments here.  :-D
>
>> If you go the Shelf full of ARC receivers route, be sure to post a
> picture.
>
> What about Collins 51X-2Bs (R-1123/ARC-73s) or even 618M-1s for the VHF
> side?  Since I don't have to get finer than .1 MCs, I can use either one.
> (Before I get cards & letters, I know the AN/ARC-73 is good to .05 MCs.)
> They're a heck of a lot more expensive than scanners or A.R.C. equipment
> but
> they'd be sooo cool looking, especially if I can find racks to fit them.
> :-)
>
> Seriously, I'll see what I can do.  :-)
>
> Best regards,
>
> Michael, WH7HG BL01xh
> http://www.nationalmssociety.org/chapters/NTH/index.aspx
> http://wh7hg.blogspot.com/
> http://kludges-other-blog.blogspot.com
> Hiki Nô!
>
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