[Boatanchors] HQ-180 bandwidth

Sun Sep 27 10:54:44 EDT 2009

That sounds like some mighty nice stations Roger.  I use the HQ-180 next to 
the PC console here and its primary use is monitoring AM or SSB/CW activity 
in conjunction with the DX Cluster. Some BCB listening also.

Since the basement is in a state of rebuilding Ive had to move most of the 
vintage gear to a spare room for storage and just left the caster mounted 
amp/modulator racks down there.The main CW/SSB station is mostly in place 
but that will also be redone next.

A few basic stations are now on a table in the family room.  Viking 
1/HQ-129X (160-80M), Viking II CDC/75A4 (40-10M), FB7-XA/Meissner Shifter 
(30M), GSB-101/SX-115/MLA-2500 on 120V; the HT-32B and NCL-2000 normally 
used weight was too much!

Carl
KM1H

----- Original Message ----- 
From: "Singley, Rodger" <rbsingl at ilstu.edu>
To: "Carl" <km1h at jeremy.mv.com>
Cc: <boatanchors at mailman.qth.net>
Sent: Saturday, September 26, 2009 10:28 PM
Subject: RE: [Boatanchors] HQ-180 bandwidth

I was curious and just tried placing the carrier on both slopes of the 
passband in the 3 Khz. "Both" setting and got the same result as Carl.  You 
might be able to improve the operation in this setting by realigning the 455 
Khz. IF section for this offset operation but then you would compromise 
other operation of the set.

I remain convinced the HQ-170/180 receivers are excellent "battle 
conditions" receivers but unless modified they are not going to offer 
wideband audio for those times when you can use it.  My operation on AM 
(both nets and roundtables) almost always involves one or more stations who 
are going to be difficult copy and my preference is to have a receiver that 
does well under poor conditions.  I have an HQ-180 paired up with a Valiant 
and an HQ-170A paired with a Pacemaker/Thunderbolt and those are both combos 
I like and use quite a bit.  My SX-88 does pretty well under both good and 
bad conditions as does my TMC GPR-90/Hammarlund HC-10 combo.  I just 
recently picked up a Watkins Johnson 8716 receiver and it seems to be very 
good under all conditions.  I don't have enough time with it yet but so far 
I am very pleased and in the ISB (independent sideband) position the 
separate sidebands are sent out as a separate stereo pair.  With the stereo 
phones on it is pretty amazing how clean one sideband often is under bad 
conditions and shows the value of a good selectable sideband receiver like 
the HQ-170.

Rodger WQ9E

-----Original Message-----
From: boatanchors-bounces at mailman.qth.net on behalf of Carl
Sent: Sat 9/26/2009 8:40 PM
To: Gary Schafer; 'Joe Roth-WC4R'; boatanchors at mailman.qth.net
Subject: Re: [Boatanchors] HQ-180 bandwidth

3 x 2 = 6
5 x 1 = 5

If you detune in the Both position it sounds like boviine excrement. I have
a HQ-180 right next to me.

Carl
KM1H

----- Original Message ----- 
From: "Gary Schafer" <garyschafer at comcast.net>
To: "'Carl'" <km1h at jeremy.mv.com>; "'Joe Roth-WC4R'" <wc4r at live.com>;
<boatanchors at mailman.qth.net>
Sent: Saturday, September 26, 2009 9:24 PM
Subject: RE: [Boatanchors] HQ-180 bandwidth

> It is doing exactly the same thing but with twice the bandwidth when you
> use
> "both".
>
> 73
> Gary  K4FMX
>
>> -----Original Message-----
>> From: Carl [mailto:km1h at jeremy.mv.com]
>> Sent: Saturday, September 26, 2009 11:11 AM
>> To: Gary Schafer; 'Joe Roth-WC4R'; boatanchors at mailman.qth.net
>> Subject: Re: [Boatanchors] HQ-180 bandwidth
>>
>> That method also gives lots of adjacent channel bleed over as well as
>> rather
>> severe distortion on the ones Ive listened to.
>>
>> The USB or LSB method sounds mo betta.
>>
>> Carl
>> KM1H
>>
>>
>> ----- Original Message -----
>> From: "Gary Schafer" <garyschafer at comcast.net>
>> To: "'Carl'" <km1h at jeremy.mv.com>; "'Joe Roth-WC4R'" <wc4r at live.com>;
>> <boatanchors at mailman.qth.net>
>> Sent: Saturday, September 26, 2009 11:03 AM
>> Subject: RE: [Boatanchors] HQ-180 bandwidth
>>
>>
>> > Yes, 3 Kc of recovered audio if the carrier is centered in the band
>> > pass
>> > with the selector switch in "both". But if you tune the carrier off to
>> one
>> > side so that you are only copying one side band then you have 6 Kc
>> > recovered
>> > audio bandwidth in the both position.
>> >
>> > If you are in USB or LSB position you can readily select upper or lower
>> > side
>> > band (with carrier centered as you suggested) by changing the switch
>> > position but you only have 3 Kc of recovered audio band width as the
>> > filter
>> > is only 3 Kc wide in these positions.
>> >
>> > 73
>> > Gary  K4FMX
>> >
>> >> -----Original Message-----
>> >> From: Carl [mailto:km1h at jeremy.mv.com]
>> >> Sent: Friday, September 25, 2009 9:08 PM
>> >> To: Gary Schafer; 'Joe Roth-WC4R'; boatanchors at mailman.qth.net
>> >> Subject: Re: [Boatanchors] HQ-180 bandwidth
>> >>
>> >> Now you have it right and we are back to Square One with that setup, 3
>> kc
>> >> of
>> >> audio recovery.
>> >>
>> >> Carl
>> >> KM1H
>> >>
>> >>
>> >> ----- Original Message -----
>> >> From: "Gary Schafer" <garyschafer at comcast.net>
>> >> To: "'Joe Roth-WC4R'" <wc4r at live.com>; <boatanchors at mailman.qth.net>
>> >> Sent: Friday, September 25, 2009 9:50 PM
>> >> Subject: Re: [Boatanchors] HQ-180 bandwidth
>> >>
>> >>
>> >> > Correction: placing the USB/LSB/both switch to both, doubles the
>> >> indicated
>> >> > bandwidth. 3 KC becomes 6 KC in both.
>> >> >
>> >> > 73
>> >> > Gary  K4FMX
>> >> >
>> >> >
>> >> >> -----Original Message-----
>> >> >> From: boatanchors-bounces at mailman.qth.net [mailto:boatanchors-
>> >> >> bounces at mailman.qth.net] On Behalf Of Gary Schafer
>> >> >> Sent: Friday, September 25, 2009 8:42 PM
>> >> >> To: 'Joe Roth-WC4R'; boatanchors at mailman.qth.net
>> >> >> Subject: Re: [Boatanchors] HQ-180 bandwidth
>> >> >>
>> >> >> When in the 3 kc bandwidth position it provides 3 kc if in SSB
>> >> >> mode.
>> >> >> Switching to AM mode changes the bandwidth to 6 kc.
>> >> >> In other words the AM mode doubles the indicated bandwidth on the
>> >> switch.
>> >> >>
>> >> >> 73
>> >> >> Gary  K4FMX
>> >> >>
>> >> >> > -----Original Message-----
>> >> >> > From: boatanchors-bounces at mailman.qth.net [mailto:boatanchors-
>> >> >> > bounces at mailman.qth.net] On Behalf Of Joe Roth-WC4R
>> >> >> > Sent: Friday, September 25, 2009 8:13 AM
>> >> >> > To: boatanchors at mailman.qth.net
>> >> >> > Subject: [Boatanchors] HQ-180 bandwidth
>> >> >> >
>> >> >> > I have a Hammarlund HQ-180C, all stock. Is there a reasonable way
>> to
>> >> >> > change
>> >> >> > the 3 KC receive bandwidth to 5 or 6 KC? I don't want a butcher
>> job.
>> >> >> > Something clean & reversible.
>> >> >> > Joe, WC4R
>> >> >> >
>> >> >> > ______________________________________________________________
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