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Date Posted by Category User IP

2016-11-05 (UTC)

AI6II

Receivers

c-24-5-105-251.hsd1.ca.comcast.net

HQ-129-X General Coverage RCVR

I have totally run out of room and need to send my HQ-129-x off to a good home. It is in good physical and excellent electrical condition. Here are the particulars:
Condition.
Cabinet; good, a few minor nicks, scratches and blemishes.
Front panel; good, a few minor scratches. Some black crackle paint is missing at the top of the brass dial escutcheon. Small hole was added to panel by a previous owner; covered with a gray snap-in plug. Panel lettering is perfect.
Both dial windows (with vertical cursor lines) have scratches which somewhat impede dial reading on some bands. Right-hand window has a partial crack; not seen when receiver is on, does not impede dial reading. No flaws noticed on the large round dials that have the frequency markings.
Receiver performance; excellent.
Test results, January 15, 2016.
Sensitivity, normal bandwidth, CW, MDS; freq, dBm: 1.830, -123; 3.6, -127; 7.1, -125; 14.1, -126; 21.1, -124; 28.1, -122. Excellent.
Sensitivity, xtal selectivity 5: 7.025, -140; 28.050, -137. Excellent.
The crystal filter has been aligned and is very effective for single-signal CW reception.
Dial calibration. Very good, remarkably close 25 years after alignment.
AM test, 3880 kHz, 50 µV, 60% modulated at 1000 Hz, AF output into 8 ohms, distortion measured results: 2 W output, 2.7% THD; 50 mW output, 1.4% THD. Excellent.

Modifications in 2004.
MUTE mod. Original mute arrangement requires connection to B+ line at inconvenient special tip jacks. This modification added a relay, and a phono jack at rear of chassis. Connecting jack to ground mutes receiver. The open-circuit voltage at the PTT jack is +12 VDC; closed current is 30 mA. With no connection to the new phono jack, the receiver operates normally. The panel standby switch and the original mute jacks remain functional.
Replaced antenna terminal with a high-quality phono jack; this is now the sole input connection, unbalanced. The other antenna terminals are grounded, and may be used as grounding terminals.
Added phono jack for speaker. Original speaker terminals remain usable.
New three conductor AC line cord for safety.

This is a very well maintained and nicely modified HQ-129-x. Price is $195 plus shipping. It weighs about 60 pounds. PayPal preferred.
Due to its age, radio is sold as-is, no returns, no refunds. If interested, please email me for more pictures and information: ai6ii at arrl dot net. 73 ..mike AI6II

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