HAMMARLUND HQ-112X Communications Receiver Manual HQ-120X

( Brand: Hammarlund ), ( Manufacturer Part Number: HQ-112X ), ( Type: Recevier )

Review HAMMARLUND Genuine Original Communications Receiver Manual

The **Hammarlund HQ-112X** and **HQ-120X** are exceptional mid-range communications receivers from the renowned Swedish manufacturer Hammarlund, celebrated for their exceptional performance, versatility, and meticulous engineering. These dual-conversion superheterodyne receivers are designed for both amateur radio enthusiasts and professional operators seeking a robust, all-mode radio capable of covering a broad spectrum of frequencies with clarity and precision. The HQ series builds upon Hammarlund s storied legacy of high-quality, analog-based receivers, offering a blend of traditional craftsmanship and modern functionality. The **HQ-112X** covers the 1.8 30 MHz range with a 10 kHz bandwidth, making it ideal for shortwave listening (SWL), amateur radio (HF), and weak-signal work, while the **HQ-120X** extends coverage to 29.9 MHz with a slightly narrower 9 kHz bandwidth, enhancing its suitability for precise frequency monitoring and CW (Morse code) reception. Both models feature a **dual-conversion design**, which minimizes image interference and provides superior selectivity, ensuring clean reception even in crowded bands. The front panel is intuitive yet detailed, with a **rotary tuning dial** paired with a **calibrated frequency display**, allowing for precise adjustments. The **BFO (Beat Frequency Oscillator)** and **S-meter** are prominently placed for easy monitoring of signal strength and CW decoding, while the **RF gain and AGC controls** offer fine-tuned adjustments for optimal performance across varying signal conditions. The receivers incorporate **high-quality components**, including a **tuned RF amplifier** and **IF stages** that deliver exceptional sensitivity and dynamic range, reducing noise and distortion for crystal-clear audio output. The **power supply** is robust, with options for both AC and DC operation, ensuring reliability in field or bench setups. The **manual** accompanying these receivers is a comprehensive guide, detailing every aspect of operation, from basic tuning and mode selection to advanced features like **IF shift, notch filtering, and memory channel programming** (available on the HQ-120X). Whether used for amateur radio, DXing, emergency communications, or educational purposes, the Hammarlund HQ-112X and HQ-120X stand as testament to Hammarlund s commitment to excellence, offering a seamless fusion of analog elegance and modern functionality for operators who demand nothing less than the best in radio reception.

### **Pros and Cons of the Hammarlund HQ-112X and HQ-120X Communications Receivers**

#### **Overview**

The Hammarlund HQ-112X and HQ-120X are high-performance, general-coverage communications receivers designed for shortwave (HF), VHF, and UHF listening and weak-signal work. They are favored by DXers, radio enthusiasts, and emergency communicators for their robust build, excellent selectivity, and analog tuning capabilities. Below is a detailed breakdown of their strengths and weaknesses.

---

### **Pros**

1. **Superior Selectivity and Image Rejection**

- Both models feature a **superheterodyne design with excellent image rejection**, making them ideal for weak-signal reception in crowded bands.

- The **HQ-120X** includes an **optional image-reject filter** (sold separately), further enhancing performance in noisy environments.

- The **HQ-112X** has a slightly narrower bandwidth (2.4 kHz vs. 3.0 kHz in the HQ-120X), which can be advantageous for CW and narrow-band FM reception.

2. **Analog Tuning with Mechanical Verification**

- Unlike many modern digital receivers, the HQ series uses **mechanical tuning dials** with **digital readouts** that can be verified by the physical position of the dial.

- This reduces the risk of tuning errors, which is critical for precise frequency selection in DXing and emergency communications.

3. **High-Performance Front End**

- Both receivers incorporate **high-quality RF preamps and IF stages**, providing strong signals even from distant or weak transmitters.

- The **HQ-120X** includes an **optional external RF preamp** (e.g., the Hammarlund HQ-120X RFP-1), which can further boost weak signals.

4. **Versatile Band Coverage**

- **160m to 10m (HF)**, plus **VHF (6m, 2m, 70cm)** and **UHF (440MHz)** coverage in the HQ-120X.

- The **HQ-112X** covers **160m 10m (HF)** and **6m (VHF)**, making it slightly more compact but less versatile for VHF/UHF work.

- Both support **SSB, CW, AM, FM, and USB/LSB modes**, with excellent audio clarity.

5. **Durable and Reliable Construction**

- Built with **high-quality components** and **solid metal chassis**, these receivers are designed to last decades with proper care.

- The **power supply is separate**, reducing the risk of damage from electrical surges.

- Many units from the 1980s 2000s are still in excellent working condition, indicating long-term reliability.

6. **Excellent for Weak-Signal and DXing**

- The **HQ-120X** is particularly well-regarded for **weak-signal reception**, including **EME (moonbounce), meteor scatter, and tropospheric propagation**.

- The **HQ-112X** is still capable but may require slightly more signal strength for optimal performance on weaker bands.

7. **Compatibility with Modern Accessories**

- Both receivers can be used with **modern SDR software** (via optional interfaces) for digital mode decoding (e.g., FT8, JT65).

- They support **external speakers, headphones, and IF outputs** for interfacing with transceivers or recording devices.

8. **Resale and Community Value**

- Due to their **high performance and rarity**, used HQ-112X and HQ-120X receivers hold **strong resale value**.

- There is an **active community** of users who share tips, modifications, and upgrades, ensuring long-term support.

---

### **Cons**

1. **High Initial Cost**

- New units are **expensive** (typically **$1,500 $2,500 ** depending on configuration).

- Used units can be found for **$800 $1,500**, but may require maintenance or upgrades.

- The **HQ-120X** is generally more costly than the **HQ-112X** due to additional features (UHF, image-reject filter option).

2. **No Built-in Digital Modes**

- Unlike modern SDR receivers (e.g., FlexRadio, Icom IC-7300), the HQ series **does not natively support digital modes** (FT8, JT65, PSK).

- Workarounds require **external SDR interfaces** (e.g., RTL-SDR software decoding), which adds complexity.

3. **No Touchscreen or Digital Tuning**

- The **fully analog tuning** can be slower and less precise for some users compared to modern digital receivers.

- No **automatic frequency scanning** or **preset memory** (though manual presets are possible with external controls).

4. **Limited Automation and Integration**

- Unlike modern radios, the HQ series **cannot be fully automated** for contesting or DXpeditions without additional hardware.

- No **CAT control** (computer-assisted tuning) without third-party interfaces.

5. **Maintenance and Aging Components**

- Some units may require **tube replacements** (if using tubes) or **capacitor checks** (especially in older models).

- **Power supply compatibility** can be an issue if using non-standard units.

- **No built-in DSP** (Digital Signal Processing), meaning audio enhancement is limited to external gear.

6. **Bulkiness and Weight**

- Both receivers are **large and heavy** (the HQ-120X is particularly bulky).

- Not ideal for **portable operation** unless mounted in a stable setup.

7. **Learning Curve for Analog Operation**

- Users accustomed to **digital tuning and touchscreens** may find the **mechanical tuning** less intuitive.

- **Weak-signal techniques** (e.g., noise reduction, manual AGC) require practice.

8. **Limited Aftermarket Support**

- While there is a **dedicated community**, **official Hammarlund support is minimal** (the company no longer produces these models).

- Upgrades (e.g., better IF amps, digital interfaces) often require **DIY efforts**.

---

### **Comparison: HQ-112X vs. HQ-120X**

**Feature** **HQ-112X** **HQ-120X**

--------------------------- -------------------------------------- --------------------------------------

**Band Coverage** 160m 10m (HF) 6m (VHF) 160m 10m (HF) 6m, 2m, 70cm, 440MHz (UHF)

**Bandwidth** 2.4 kHz (narrower) 3.0 kHz (wider)

**Image Rejection** Basic (no optional filter) Optional image-reject filter

**RF Preamps** Standard (no external option) Optional external RF preamp

**Price (New/Used)** Slightly cheaper than HQ-120X More expensive due to extra features

**Best For** HF DXing, CW, AM, portable setups Weak-signal work, VHF/UHF, EME

---

### **Conclusion and Recommendation**

#### **Who Should Buy an HQ-112X or HQ-120X?**

1. **Serious DXers and Weak-Signal Enthusiasts**

- If you prioritize **raw performance, selectivity, and analog tuning**, the HQ series delivers unmatched weak-signal capability.

- The **HQ-120X** is the better choice if you need **UHF/VHF coverage** for EME, meteor scatter, or local repeaters.

2. **Radio Purists and Analog Aficionados**

- If you enjoy **mechanical tuning, tube-based operation, and classic radio design**, these receivers offer a **premium analog experience**.

- The **lack of digital modes** may be a trade-off, but the **audio clarity and tuning precision** are unmatched.

3. **Emergency Communicators and Survivalists**

- The **durability, reliability, and HF/VHF coverage** make them ideal for **off-grid or emergency use**.

- No reliance on **internet-connected SDRs** means they work in **total blackout scenarios**.

4. **Investment Pieces**

- If you see them as **long-term assets**, their **resale value and community support** make them worthwhile.

- Many users keep them for **decades**, passing them down or selling them at a premium.

5. **Users Who Prefer Hardware Over Software**

- If you **dislike digital clutter** and want a **self-contained receiver**, the HQ series is a **pure analog solution**.

- No need for **computers, SDRs, or software dependencies**.

#### **Who Should Avoid Them?**

- **Beginners**

Details:

GENUINE ORIGINAL HAMMARLUND HQ-120X COMMUNICATIONS RECEIVER MANUAL, THIS IS AN MANUAL AND SCHEMATICS IN VERY GOOD CONDITION, Buyer to add $5. For larger amounts, contact me. Shipping charge may not include AK or HI. Almost every older electronic item will benefit from a careful alignment and cleaning or other restoration.

Images may not be unique. Shipping USA.

part #: hq112x prices

• $11.99-$135.00

specifications hamamateuradio:

• brand: Hammarlund
• mpn: Hq-112x
• type: Recevier

shipping hamamateuradio:

• service: USPS Media Mail
• type: Fixed
• cost: $5.00
• class: Economy
• transit: 5-12 Days
• carrier: USPS

seller hamamateuradio:

• # reviews: 10300
• rating: 100.0%
• city: Greer, South Carolina

general hamamateuradio:

• condition: Very Good
• Radio Communication > Parts Accessories > Manuals Magazines

payments hamamateuradio:

• wallet: Google-pay
• credit card: Visa
• other

returns hamamateuradio:

• policy: No Returns

offer hamamateuradio:

• availability: In Stock
• sold: 0
• options: Ship-to-home
• quantity: 1
• started: April 22, 2026

Hammarlund HQ-112X Is Similar To:

• Swf-4 Hammarlunc Hammarlund Coil Form Plug Genuine Nos New In Box (37.4% similar) Hammarlund coil form SF 4 plug nos nos in box. I have 2 available fast shipping...(November 22nd, 2015)
• Hq-100 Hammarlund Shortwave Ham Tube Radio Receiver (41.6% similar) Unit is in average cosmetic condition with signs of wear tear usage, internals look good and no corrosion seen. The unit does power on, however the knob is extremely hard to turn. I do not pad shipping prices, postage is calculated using's shipping calculator based on dimensions and weight of the ...(March 12th, 2016)
• Hq-100a Hammarlund Vintage Communications Receiver (61.3% similar) Item might need some minor repairs to be fully functional. There was also an audible faint static. I did not see the two primary meters light up band spread and main tuner. Please see photos for details. Original operating instructions manual included. A really sharp looking collectible. The item is...(August 28th, 2016)
• Hq-129-x Hammarlund Vintage Hammurland Ham Radio Receiver Untested (47.1% similar) Powers on and sound comes that is as far I can tell selling untested. Hammarlund hq 129 x tube radio selling untested. With all manual...(November 17th, 2016)
• Hq-150 Hammarlund Rare Communications Receiver 540-31 000 Khz Everything Works (50% similar) Note this radio is very heavy. Made sometime between q multiplier. Also probably needs alignment to make it right. 2 am broadcast band works well. Speaker output and headphone jack both work does not have a built in speaker only. Crystal calibrator with selectivity and phasing. Free shipping. ...(January 17th, 2016)
• Hq-160 Hammarlund Receiver (38% similar) ...(October 16th, 2016)
• Hq-180 Receiver Hammarlund Clock In Working Condition (39.4% similar) Removed from a working hq 180 receiver. Comes with a few parts ext rod, screws, knob. USA Canada buyers only please. Clock works fine...(April 15th, 2016)
• Hq-180ac Hammarlund Vintage Tube Communications Receiver (60% similar) I inherited from my grand father that passed. 2 speakers as well. He was a genius with all this electronic stuff. Seems to work not sure when I move the dials things work. Looking for 300 us dollars...(May 20th, 2016)
• Hammarlund One Seventy Ham Radio Receiver With Clock (49.2% similar) My husband purchased this Hammarlund receiver but sadly he never got to use it as unexpectedly passed away. This also is untested and I shall be selling that one as too. Hammarlund hq-one seventy shortwave ham tube receiver with a clock. As it is untested I am selling...(April 29th, 2018)
• Sp-600 Hammarlund Four Manual Set Series Radios (34.7% similar) It has line drawings showing where every part is in the radio. I have added eight pages of nice clear photos. 14 pages covering operational theory, MC reception, tuning procedure, adjustments under noisy conditions, suppressed carrier reception, etc. This is a very nice set of four comb bound ...(February 23rd, 2016)
• Hq-100ac Hammarlund Model Vintage General Coverage Ham Radio Receiver (47.6% similar) Awesome ham radio with speaker unit. Very nice and great condition unit, it looks like was hardly ever used. I am not familiar with broad casting or receiving. I plugged it in and turned on after many years all seems to functions light up...(April 8th, 2018)