Re: [RAS_Prime] Abridged summary of rasprime@googlegroups.com - 9 updates in 2 topics

[john firth]

the two HP 11s which I owned had the retracting Schreder hook;  side load increased the 

release force  to the point at which release was impossible; ie dangerous for novices .

dropping a tip on takeoff  could lead to an accident.

John firth

On Sat, Sep 27, 2025 at 8:52 PM <rasp...@googlegroups.com> wrote:

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• PW-5 Antenna Replacement - 7 Updates
• Pros and Cons of Schrader tow hooks - 2 Updates

PW-5 Antenna Replacement

Tom Watson <ther...@gmail.com>: Sep 27 12:17AM -0400 John, Do you have room for a vertically polarized half wave dipole? Easy to build and you don't need a ground plane. Best, Tom W4APQ   Sent from my iPhone   On Sep 26, 2025, at 7:04 PM, John DeRosa ...more

Dave Nadler <d...@nadler.com>: Sep 27 11:11AM -0700 John, you didn't say - you did have the radio checked?   On Saturday, September 27, 2025 at 12:18:02 AM UTC-4 Tom Watson wrote:   ...more

John DeRosa <jhde...@gmail.com>: Sep 27 12:03PM -0700 Dave,   Yes I did verify the radio. What I always start with in troubleshooting radio problems is determining if the transceiver is the issue.   I checked the following;   > My club's fleet ...more

John DeRosa <jhde...@gmail.com>: Sep 27 12:18PM -0700 Thermaler,   That is a possibility. I assume that you are speaking of a center fed antenna like this > https://www.cumulus-soaring.com/store/aae-vhf-5l. Being 42" long It would need to be ...more

Tom Watson <ther...@gmail.com>: Sep 27 03:46PM -0400 John, Another thought is construct a 1/4wave Coaxial. You could probably get the radiator somewhat vertical in the back corner of the cockpit. The choke portion could just trail on the side or floor. ...more

Craig Funston <nimbu...@gmail.com>: Sep 27 01:20PM -0700 John,   I had a similar experience with the antenna in the rudder of my Nimbus 4. Measured SWR was horrible at first, even after replacing the coax from the rudder to the cockpit. I finally found ...more

Peter Hudson <peter...@gmail.com>: Sep 27 02:01PM -0700 I have a similar issue with my AC-4C...VSWR of about 2.9 and very poor bandwidth and that's tuned at 135 Mhz...it's much worse at 123 MHz.  I'm still thinking about a sort of laparoscopic surgery ...more

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Pros and Cons of Schrader tow hooks

John Johnson <john...@gmail.com>: Sep 26 06:38PM -0700 *"My SCHREDER-designed glider had a persistent oleo strut pressure problem that was fixed by replacing the strut's SCHRADER valve core" *   I see what you did there :-)   JJ   ...more

Dave Nadler <d...@nadler.com>: Sep 27 11:10AM -0700 Jack, decades ago I had a glider with the Schreder retracting flush tow-hook. It had a nasty habit of premature release on very light back-pressure. Likely a problem with my particular hook ...more

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