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Author Topic: hammarlund HQ-180AC  (Read 5880 times)
AA5WG
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Posts: 498




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« on: September 25, 2010, 05:29:32 AM »

Hi to all:
Before I go on the air I check all the WWV/WWVH frequencies for propagation (2.5, 10.0, 15.0, and 20.0 MHZ). 

With the Hammarlund HQ-180AC and starting at 2.5 MHz how much tuning is there when changing bands to listen to 10.0, 15.0 and 20.0 MHZ?  Do all the above bands line up on the dial or is there a lot of tuning with the dial from one end to the other end of the band?

I have not used the HQ-180AC.

Could someone please take a photo of the dials for me and explain this to me?

Thank you for you consideration.
Chuck - A5WG
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W6OU
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Posts: 192




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« Reply #1 on: September 25, 2010, 03:27:48 PM »

There is a video of the Hammarlund HQ-180AC showing the dial range at the following site:

http://www.youtube.com/watch?v=ZFKdVNDBgOk

Look at video between 1:07 and 2:17 minutes. 2.5, 5.0, 10.0, and 20.0 MHz are fairly close on the dial but 15.0 MHz is way on the right side.
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AA5WG
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Posts: 498




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« Reply #2 on: September 25, 2010, 06:13:54 PM »

W6OU:
Thank you but I cannot see the markings clearly with this YouTube video.
73,
Chuck
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KA5N
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Posts: 4380




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« Reply #3 on: September 25, 2010, 07:06:01 PM »

I don't know what kind of equipment you have been using, but the HQ-180 AC is like many of the receivers of the 1930's to the 1970's.  You have a bandswitch, a main tuning dial and a bandspread dial.
Set the bandswitch to the desired band.  Set the main tuning dial (usually there is a pip on the dial that indicates the setting for the various ham bands) and then use the bandspread tuning for the
desired frequency.  This should be covered in the manual (if you don't have one then you should buy one from the many services that reprint them or visit the Bama site or other site on the web).
With a little practice you should be able to tune in any of the WWV signals in a minute or so.  It is not
nearly so difficult as going from an automatic transmission to a stick shift.
Allen
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WB2WIK
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Posts: 20613




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« Reply #4 on: September 25, 2010, 08:20:32 PM »

AA5WG, did you expect a 50 year-old, low-cost (which it was) analog receiver to have accurate dial calibrations?

C'mon.

The only rigs from that era that had accurate dial calibrations were made by Collins; and shortly thereafter, Drake.

When I had an HQ-180, I was happy if it was within 5 kHz after an hour warm-up.  That's what "amateur" radio's all about. Cheesy
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G3RZP
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« Reply #5 on: September 26, 2010, 12:30:12 AM »

I would not have called the HQ180 'low cost' - at least, not over here. When I started work in 1964, my annual salary was about the same as the cost of an HQ180 two years earlier, and inflation was low at that time.

It was cheaper than Collins (which was arguably somewhat overpriced for what it was, but not for the costs involved in producing ham gear in a company the size of Collins with their main product lines being aimed at the military), and from memory, the only comparable Drake receiver was the 2B, and that wasn't general coverage.
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AA5WG
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Posts: 498




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« Reply #6 on: September 26, 2010, 05:23:08 AM »

How much dial tuning is there when swithcing bands (with the Hammarlund HQ-180A)  to tune in 2.5, 5.0, 10.0, 15.0 and 20.0 MHz.  i.e. a few kcs or an entine band?

Thank you.
Chuck - AA5WG
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N8CMQ
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Posts: 379




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« Reply #7 on: September 26, 2010, 07:58:27 AM »

AA5WG, did you expect a 50 year-old, low-cost (which it was) analog receiver to have accurate dial calibrations?

C'mon.

The only rigs from that era that had accurate dial calibrations were made by Collins; and shortly thereafter, Drake.

When I had an HQ-180, I was happy if it was within 5 kHz after an hour warm-up.  That's what "amateur" radio's all about. Cheesy

My low cost Hallicrafters SX-101 mk3 was all over the dial when I bought it, but, I was able to align the local oscillator to perfection on all bands.
After an hour of warm up, it is also very stable, and I can quickly and accurately check the alignment with the built in crystal calibrator.
Knowing the receiver inside and out helps when trusting the dial calibration, granted, it isn't a PLL digital display, but it is accurate enough to stay inside the bands, and sensitive enough to hear the weak ones! Plus, the selectivity goes down to 500 Hz with a notch filter that can cut that down further...
So, a low cost antique can perform well enough to do the job and do it well.
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KA5N
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Posts: 4380




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« Reply #8 on: September 26, 2010, 08:28:16 AM »

Quote
How much dial tuning is there when switching bands (with the Hammarlund HQ-180A)  to tune in 2.5, 5.0, 10.0, 15.0 and 20.0 MHz.  i.e. a few kcs or an entine band?

How can frequencies which are 25000 kHz or 50000 kHz (or more) apart be a few kcs (same as kHz)
apart?   
On this receiver each position of the bandswitch has a different scale.  Each of the WWV signals are at
a different band setting (except 15 and 20 MHz).  In any case it is just a matter of turning a knob a bit.

I notice that you are not listed in QRZ.  Do you own this receiver?  Have you ever seen an HQ-180A?
You seem to be struggling with a very simple situation.  Perhaps a local ham can help.

Allen

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AA5WG
Member

Posts: 498




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« Reply #9 on: September 26, 2010, 09:49:31 AM »

Hi everyone:

Reference: Hammarlund HQ-180A

i.e. After listening on 2.5 MHz one could switch bands to listen on 5.00 MHz.  How close is the previous 2.5 MHz dial setting scale to the new 5.0 MHz dial setting . scale.

And, after changing bands to 10.0 MHz how close is the previous 5.0 MHz dial setting scale to the new 10.0 MHz dial setting scale?

And, after changing bands to 15.0 MHz how close is the previous 10.0 MHz dial setting scale to the new 15.0 MHz dial setting scale?

Thank you.
Chuck - AA5WG
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AA5WG
Member

Posts: 498




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« Reply #10 on: September 26, 2010, 09:55:55 AM »

Would someone take a closeup photo of the two dial scales of the Hammarlund HQ-180A please.  I would like to see the 2.5, 5.0, 10.0, 15.0 and 20.0 MHz settings on the dials.
Thank you.
Chuck - AA5WG
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AA5WG
Member

Posts: 498




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« Reply #11 on: September 26, 2010, 10:19:11 AM »

Hello to all:
How close do the WWV marks or points on the dial line up for the different bands, 2.5, 5.0, 10.0 and 20.0 MHz?
Thank you.
Chuck - AA5WG
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AA5WG
Member

Posts: 498




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« Reply #12 on: September 26, 2010, 10:26:08 AM »

W6OU, KA5N, WB2WIK, G3RZP and N8CMQ thank you.
Chuck - AA5WG
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W6OU
Member

Posts: 192




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« Reply #13 on: September 26, 2010, 10:43:51 AM »

Perhaps you viewed only the first part of the video. Later on there is a closeup of the main tuning dial as it is tuned from one end to the other. You can clearly see the frequency markings. For more clarity, try the 480p resolution instead of 360p or 240p.
« Last Edit: September 26, 2010, 10:48:39 AM by James Okubo » Logged
AA5WG
Member

Posts: 498




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« Reply #14 on: September 26, 2010, 11:09:40 AM »

W6OU:
Thanks, I will go back and check the video again.
Thank you.
Chuck - AA5WG
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