[AMRadio] Boat Anchor Receiver


David Knepper collinsradio at comcast.net
Fri Dec 2 05:48:16 EST 2011


You will have to stand over their graves, of these earlier radio pioneers 
and ask them.   Don't expect an answer, however.

In a word, Brett, it is called progress.

Cheers

David Knepper, W3CRA/W3ST
Collins Radio Association - Join Today
www.collinsra.com
Editor of the Collins Journal
Secretary of the Collins Radio Association
See us on Facebook:  Collins Radio Association

----- Original Message ----- 
From: "Brett Gazdzinski" <Brett.Gazdzinski at verizon.net>
To: "Discussion of AM Radio in the Amateur Service" 
<amradio at mailman.qth.net>
Sent: Thursday, December 01, 2011 11:13 PM
Subject: Re: [AMRadio] Boat Anchor Receiver


>I wonder why that is so.
> My homebrew receivers use tubes, simple circuits, just B+W coil stock for
> the LO coil, and a few negative coefficient caps and they settle down in
> under 2 minutes for the miniature tube version, and about 4 minutes for 
> the
> octal tube version that uses slug tuned coils in the LO.
> It just does not seem that hard to get something stable, why did they have
> so much drift back then?
>
> Brett
> N2DTS
>
>
>
> ----- Original Message ----- 
> From: "Terry Armstrong" <odtrainer at aol.com>
> To: <amradio at mailman.qth.net>
> Sent: Thursday, December 01, 2011 10:32 PM
> Subject: Re: [AMRadio] Boat Anchor Receiver
>
>
>> Thanks Mitch.
>>
>>
>> I find the HQ 110 A is okay and yes it takes about 30 minutes for it to
>> warm up. My Ranger takes about the same time.  Guess I am always looking
>> to improve the station.
>>
>>
>> Terry
>>
>>
>>
>>
>> Terry R. Armstrong
>> 2445 Riverside Dr. #302
>> Trenton, MI 48183
>>
>> odtrainer at aol.com
>> Cell 734-778-3008
>>
>>
>>
>>
>> -----Original Message-----
>> From: C.L. Mitchell <rsq14adam1 at hotmail.com>
>> To: amradio <amradio at mailman.qth.net>
>> Sent: Thu, Dec 1, 2011 5:28 pm
>> Subject: Re: [AMRadio] Boat Anchor Receiver
>>
>>
>>
>> I agree with Kim.  Currently have both a 110A and 170.  The 110A makes a
>> fine
>> backup.  Both need warm-up time more than the Collins or my homebrew 
>> unit,
>> but
>> even the 110A is stable after half an hour or so.  Biggies for the 170 
>> are
>> the
>> multiple IF bandwidths, sideband selection capability, and the notch
>> filter.
>>
>> 73,  Mitch  K9PNP
>>
>>
>>> Date: Thu, 1 Dec 2011 17:54:54 -0600
>>> To: amradio at mailman.qth.net
>>> From: cw_de_n5op at sbcglobal.net
>>> Subject: Re: [AMRadio] Boat Anchor Receiver
>>>
>>> I grew up with both of those receivers and can tell you that there's
>>> a world of difference between the them. Of the two, I kept the '170
>>> from my parent's estate and let the '110 go. Unfortunately, I let a
>>> lot of other things go that I now regret, but my funds were limited
>>> (the estate was contested and I had to purchase the items against my
>>> share). The '170 is much more stable, tunes more smoothly and has
>>> much better selectivity. The '110 is a good general coverage unit,
>>> but simply cannot compare to the '170 for ham band use.
>>>
>>> 73,
>>>
>>> Kim N5OP
>>>
>>> At 02:20 PM 12/1/2011, you wrote:
>>> >Thanks for your input, Nick. How much better would an HQ 170 be
>>> >over my HQ 110A, Just wondering.
>>> >I am certainly getting a lot of good ideas.
>>> >
>>> >
>>> >
>>> >Terry
>>> >K0IEO
>>> >
>>> >
>>> >Terry R. Armstrong
>>> >2445 Riverside Dr. #302
>>> >Trenton, MI 48183
>>> >
>>> >odtrainer at aol.com
>>> >Office 734-301-3011
>>> >Cell 734-778-3008
>>> >
>>> >
>>> >
>>> >
>>> >-----Original Message-----
>>> >From: Robert Nickels <ranickel at comcast.net>
>>> >To: amradio <amradio at mailman.qth.net>
>>> >Sent: Thu, Dec 1, 2011 9:28 am
>>> >Subject: Re: [AMRadio] Boat Anchor Receiver
>>> >
>>> >
>>> >Since just about all possibilities have been covered, I'll add to the
>>> >pile ;-)
>>> >
>>> >The Hammarlund HQ-170 and National NC-300 are two of the better
>>> >ham-bands-only (including 160) receivers that are often seen unsold at
>>> >hamfests a very reasonable prices. The much-coveted Hammarlund SSB
>>> >converters (HC-10 and SPC-10) are basically the final mixer, low IF,
>>> >detector, AGC, and audio system from an HQ-170 receiver yet you can
>>> >typically buy a complete working HQ-170 for half the price or less.
>>> >
>>> >While the later NC-303 was optimized for SSB, the NC-300 has a product
>>> >detector also and will do a good job on the other modes.
>>> >
>>> >73 Bob W9RAN
>>> >______________________________________________________________
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